Positive mentions of Moz

If you're running a small ecommerce site on a tight budget, I’d start free and only pay when you actually need continuous monitoring.

My shortlist

1. Google Search Console — use this regardless.
It's free and gives you Google's own view of links to your verified site. The Links report is useful for periodically checking referring sites, although it isn't designed as a dedicated lost-link monitoring system. Google Backlynk

search.google.com

2. Ahrefs — probably my pick if you eventually pay for one tool.
Its backlink database and filtering are particularly useful for identifying links that disappeared, and its Alerts product can email you when a domain or URL gains or loses backlinks. Ahrefs also has a free backlink checker for quick checks. Ahrefs Ahrefs

The catch for a tight budget: its main paid plans currently start at $129/month, although Ahrefs also offers a free tier and a $29/month Starter product with more limited functionality. Ahrefs

ahrefs.com

3. Semrush — good if you want backlinks plus a broader SEO toolkit.
Backlink Analytics tracks new and lost links, while Backlink Audit can send alerts for new, broken, and lost backlinks. That's useful if you want backlink monitoring alongside keyword/technical SEO work rather than buying a backlink-only tool. Semrush Semrush

semrush.com

What I'd do on your budget

$0/month:

• Set up Google Search Console.
• Use its Links report as your baseline.
• Use the free Ahrefs and Semrush backlink checkers for occasional deeper investigations.
• Keep a simple spreadsheet of your important backlinks and check it monthly.

Small paid budget:
I'd consider one month of Ahrefs or Semrush periodically, rather than maintaining an expensive subscription year-round. Export your backlink data, identify important lost links, and contact the sites that removed them.

One important caveat: don't expect different backlink tools to show identical numbers. Each has its own crawler/index, so a link appearing in Ahrefs but not Search Console—or vice versa—doesn't necessarily mean either tool is wrong. Search Scientists

For an ecommerce site, I'd especially monitor links pointing directly to your product/category pages, not just your homepage. A lost link to a high-value product category can matter much more than losing a random homepage mention.

The catch for a tight budget: its main paid plans currently start at $129/month, although Ahrefs also offers a free tier and a $29/month Starter product with more limited functionality. Ahrefs

ahrefs.com

3. Semrush — good if you want backlinks plus a broader SEO toolkit.
Backlink Analytics tracks new and lost links, while Backlink Audit can send alerts for new, broken, and lost backlinks. That's useful if you want backlink monitoring alongside keyword/technical SEO work rather than buying a backlink-only tool.

For a mid-size agency, the “best” backlink checker depends less on raw backlink data and more on your workflow: number of SEO specialists, number of client domains, whether clients need logins, and how polished your reports need to be. The main contenders are:

Shortlist by agency scenario

If your core service is link building

Choose Ahrefs. It is typically the daily driver for teams doing:

• competitor backlink research
• link prospecting
• lost-link recovery
• authority analysis

The tradeoff: you may want a separate reporting layer for polished client dashboards. Ahrefs AgencyAnalytics

If you run broader SEO retainers

Choose Semrush. It tends to fit agencies better when the same team handles:

• backlinks
• rankings
• technical audits
• content
• competitor research
• client reporting

Semrush specifically positions its agency workflow around multi-client management, role-based access, and white-label reporting. Semrush

If client reporting is the bottleneck

Consider a stack like:

• Ahrefs or Semrush → backlink intelligence
• AgencyAnalytics → branded dashboards and recurring client reports

This separates “best SEO data” from “best client experience.” AgencyAnalytics

What I would evaluate before buying

For a mid-size agency, test these limits:

1. User seats

• Do every strategist, account manager, and analyst get their own login?
• Avoid workflows that depend on shared credentials. Ahrefs, for example, requires individual seats for users who need access. Ahrefs
• Projects/domains

• Count active client domains, not just current clients.
• Include staging sites, competitor projects, and campaign microsites.
• Client access

• Do clients need a portal?
• Do they only need monthly PDFs?
• Do account managers need dashboards without SEO-tool training?
• Reporting automation

• Scheduled reports
• White-label branding
• API access
• Data exports

Practical recommendation for a mid-size agency

A common setup is:

• SEO-heavy agency (5–20 practitioners): Ahrefs + a reporting platform
• Full-service digital agency: Semrush as the primary platform
• Many smaller clients with recurring reports: Semrush or SE Ranking + AgencyAnalytics

The deciding factor is usually whether your agency’s value is primarily link intelligence or repeatable client reporting operations. Semrush AgencyAnalytics

If you share roughly number of SEO users, number of client domains, and whether clients need logins, I can narrow this to 2–3 realistic plans.

For a mid-size agency, I’d narrow it to Semrush, Ahrefs, and SE Ranking. The best choice depends less on raw backlink data and more on how many people need access and how polished your client reporting needs to be.

1. semrush.com — best overall for a growing agency

I'd make this the default choice if you have multiple SEO specialists working across lots of clients.

Semrush supports multiple users with role-based permissions, lets you manage multiple client projects in one workspace, and has agency-oriented white-label reporting. Its backlink tools cover audits, toxic-link identification, competitive backlink research, and link-building opportunities. Semrush Semrush

Why I like it for your use case:

• Strong multi-user/workspace model
• Excellent combination of backlinks + rank tracking + technical SEO + competitive research
• White-label automated reports
• Custom dashboards for clients
• Enterprise option if your agency keeps growing
• Additional users can be added rather than forcing everyone onto a shared login Semrush

Trade-off: It can get expensive as you add users and functionality, and its backlink experience isn't quite the reason I'd choose it over Ahrefs if backlink research is your agency's core specialty.

2. ahrefs.com — best if backlinks are the centerpiece

If your agency does serious link building, digital PR, competitive backlink analysis, and link prospecting, I'd put Ahrefs first.

Its major advantage is the depth of backlink intelligence. Current comparisons continue to rate Ahrefs particularly highly for backlink index size, freshness, and analysis depth. Backly

The newer agency tooling also emphasizes client audits, competitive intelligence, and automated client reporting. Ahrefs

Choose Ahrefs when:

• Backlink research is a major billable service
• You routinely analyze competitors' link profiles
• Your strategists need sophisticated filtering/segmentation
• Data quality/depth matters more than having the broadest agency workflow

Trade-off: For a team where 10+ people need regular access and clients need branded dashboards/reports, I'd scrutinize the current seat/usage economics before committing.

3. seranking.com — best agency value

This is the one I'd investigate seriously if you're trying to scale client count without scaling software costs proportionally.

Its Agency Pack currently includes white-labeling, client seats, unlimited scheduled reports, and AI-generated report summaries. The current documentation lists 30 client seats on the Agency Pack. SE Ranking SE Ranking

Its reporting system can combine data from its Backlink Checker, rank tracker, site audit, GA4 and GSC, with customizable reports and white-label delivery. SE Ranking

Particularly good for:

• Account managers who need client access
• Lots of smaller/mid-market clients
• Automated monthly reporting
• Branded client portals
• Agencies wanting an API/custom reporting workflow

The big distinction is that SE Ranking isn't merely giving you backlink data—it has built the agency/client-management layer around it. SE Ranking Help SE Ranking

4. Moz Pro — good, but I'd put it behind those three

Moz Pro remains a solid choice if your team values straightforward SEO workflows and Moz's authority metrics. But for a mid-size agency specifically prioritizing multi-user scaling + client reporting + backlink operations, I think Semrush and SE Ranking offer a more compelling agency proposition, while Ahrefs offers stronger specialist backlink depth.

My recommendation

I'd rank them for your specific situation:

🥇 Semrush — best if you want one platform to run a substantial agency SEO operation.

🥈 SE Ranking — best if number of users/clients and reporting efficiency per dollar are major considerations.

🥉 Ahrefs — best if backlink intelligence itself is the differentiator you're selling.

If your agency has, say, 10–30 internal users and 30–100+ clients, I'd lean Semrush vs. SE Ranking, and I'd compare the actual seat/project/report limits at your expected scale rather than comparing headline subscription prices. Semrush explicitly supports role-based multi-user access and multiple client projects, while SE Ranking's Agency Pack is unusually explicit about client seats and white-label reporting. Semrush SE Ranking

If you tell me roughly how many internal users + clients + monthly backlink checks/reports you need, I can give you a more concrete Semrush vs Ahrefs vs SE Ranking cost/scalability breakdown.

For a content-first blog, the best backlink tools are the ones that help you find domains that are not just authoritative, but also topically relevant, actively publishing, and likely to accept editorial contributions. A high Domain Rating alone does not always translate into a valuable outreach target.

Here are the strongest options:

A practical workflow for a content-first blog

1. Start with competitor backlink mining

Use Ahrefs or Semrush:

• Enter 5–10 blogs competing for the same audience.
• Export referring domains.
• Filter for:

• Relevant topic category
• Real organic traffic
• Recent link activity
• Editorial-looking links (not directories or spam)

Example:

• Competitor publishes a “remote work tools” guide.
• Find domains linking to that guide.
• Add those domains to your outreach list if they publish similar content.

2. Prioritize domains using more than authority metrics

A good outreach target usually has:

• Topical match — a marketing blog should usually target marketing-related publications.
• Organic traffic — signs that real readers exist.
• Recent publishing activity — a dead site is unlikely to respond.
• Editorial standards — strong contributor guidelines or quality articles.
• Relevant outbound links — they already link to useful resources.

Avoid relying only on:

• DR/DA scores
• Huge backlink counts
• “Guest post available” lists (often contain low-quality sites)

3. Find guest-post opportunities specifically

Useful searches inside backlink tools:

• “competitor + guest post”
• “competitor + contributor”
• “competitor + resources”
• “competitor + roundup”
• “competitor + author”

Also look at:

• Who writes for competing blogs
• Which publications cite their research
• Which sites publish expert interviews

4. Build a prospect scoring sheet

A simple scoring model:

Prioritize domains scoring 18+/25 rather than chasing the biggest metrics.

Recommended tool stack by budget

Low budget

• Semrush free backlink checker
• Moz Link Explorer free queries
• Google Sheets
• Hunter free tier

Serious content marketing

• Ahrefs + BuzzStream

Agency-scale outreach

• Ahrefs + Semrush + BuzzStream + Hunter

For a content-first blog, I would generally start with Ahrefs for discovering opportunities, Semrush for competitor gap analysis, and an outreach CRM such as BuzzStream for turning prospects into campaigns. Semrush Ahrefs

• Ahrefs + Semrush + BuzzStream + Hunter

For a content-first blog, I would generally start with Ahrefs for discovering opportunities, Semrush for competitor gap analysis, and an outreach CRM such as BuzzStream for turning prospects into campaigns. Semrush Ahrefs

For a content-first blog, I’d prioritize backlink tools that let you discover relevant referring domains and understand why competitors earned those links, rather than simply chasing the highest domain-authority number.

Tools worth using

• ahrefs.com — probably the most useful all-around choice for this workflow. Site Explorer lets you inspect competitors' referring domains, backlinks, linked pages, estimated organic traffic, and DR/UR metrics. Its “Best by links” and broken-link data are particularly useful for finding content you could create a better replacement for. Ahrefs Help Center Ahrefs
• semrush.com — strong if you want competitor backlink gaps + outreach in one ecosystem. Backlink Gap identifies domains linking to competitors but not you, with filtering by relevance and authority; Semrush also provides link-status and referring-domain data. Semrush Semrush
• moz.com — useful as a second opinion on domain/link authority, particularly if you already use Moz for broader SEO research.
• Majestic — worth considering if your workflow is heavily backlink-centric and you want another link-index perspective. Different backlink databases surface different links, so cross-checking candidates can be useful. Search Scientists

How I'd identify high-value outreach domains

Don't make DR/DA alone your qualification criterion. Build a prospect list and score each domain on:

One particularly useful distinction: a referring domain isn't the same thing as a backlink. Ten links from one website still represent only one referring domain, so for outreach prospecting you generally want to identify unique, relevant domains. Ahrefs Help Center

A practical workflow

1. Put 3–5 competitors into Ahrefs or Semrush.
2. Export their referring domains.
3. Remove obvious directories, spam, irrelevant sites, and sites that aren't realistic outreach targets.
4. Look for domains linking to multiple competitors. Those are especially interesting because they have demonstrated interest in your topic.
5. Inspect the actual linking articles—not just the domain metric.
6. Classify the opportunity as guest contribution, resource inclusion, original research/data, expert quote, broken-link replacement, or editorial pitch.
7. Prioritize sites where you can propose something genuinely useful rather than simply asking for a link.

For a content-first blog, I'd particularly look for “linkable asset” opportunities: competitors' statistics pages, original research, comprehensive guides, calculators, templates, studies, and other resources that attract lots of referring domains. Ahrefs specifically exposes the pages earning the most links, which makes this analysis straightforward. Ahrefs

If you're choosing just one: Ahrefs is a strong fit for the research/discovery side; Semrush becomes especially attractive if you want backlink-gap analysis tied closely to broader SEO and outreach workflows. I would use the actual relevance and editorial quality of each prospect as the final filter rather than treating DR or Authority Score as a proxy for value.

For inherited sites with strange referral spikes, I’d avoid jumping straight to “disavow everything.” The first job is to map the spike pattern, identify whether it’s actually harmful, and only disavow links that show clear manipulation or spam patterns. Google’s systems often ignore many low-quality links automatically, so a big backlink count alone is not proof of a problem. Listicler

The tools I’d use:

1. Semrush — best for a guided toxic-link audit

Good choice if you inherited a site and need a workflow.

Useful features:

• Backlink Audit with toxicity scoring
• New/lost backlink monitoring
• Anchor text analysis
• Referring-domain clustering
• Disavow file workflow/export

It’s particularly useful for quickly answering: “Which 500 of these 50,000 links deserve human review?” SharkPlatform

2. Ahrefs — best for deep backlink investigation

I’d use Ahrefs when the spike looks suspicious and you need to understand the source network.

Look for:

• Sudden bursts of referring domains
• Repeated exact-match anchors
• Links from unrelated niches
• Sitewide footer/sidebar links
• Networks of similar domains
• Previously lost/recovered links

Ahrefs is strong for raw backlink discovery and historical analysis. Listicler

3. Google Search Console — essential baseline

Use this because it’s Google’s own view of your link profile.

Check:

• Links report → top linking sites
• Top linked pages
• Anchor text patterns
• Whether spikes correspond with ranking drops or manual actions

Treat it as the source of truth for what Google knows, but combine it with third-party crawlers because Search Console data is sampled. Buy Backlinks for SEO

4. Moz Pro — useful second opinion

Moz’s Spam Score can help identify domains with patterns associated with spam. It’s not a “Google penalty score,” but it can be a helpful prioritization signal. Backlynk

5. Majestic — useful for trust/flow analysis

Helpful when you suspect link networks:

• Trust Flow vs Citation Flow imbalance
• Topical mismatch
• Large numbers of low-trust referring domains

My audit workflow for an inherited site

1. Export backlinks from at least two sources

• Google Search Console
• Ahrefs or Semrush
• Sort by suspicious signals

• Huge referral spike in a short period
• Foreign-language sites unrelated to your market
• Casino/adult/AI-generated directory patterns
• Thousands of links from one domain
• Exact-match commercial anchors
• Domains with no organic traffic
• Manually inspect samples

A domain with a low authority metric is not automatically bad. A real blog, news mention, customer site, or niche directory may be valuable even if it looks “small.”

4. Remove first when possible

Contact site owners for obvious paid/spam links. Disavow is generally a cleanup tool for links you cannot get removed and that you believe may cause problems.

5. Document everything

Keep:

• export date
• domains reviewed
• reason for disavow
• outreach attempts
• submitted disavow versions

For most inherited-site audits, I’d pair Ahrefs (discovery) + Semrush (triage/workflow) + Search Console (Google-side verification). That combination catches most referral-spike scenarios without over-disavowing. linkindex.us

If you can share what kind of spike it is (e.g., “10k links from 300 domains overnight” vs “referral traffic suddenly jumped”), the investigation path changes quite a bit.

For SaaS outreach, I’d separate “best historical database” from “best prospecting workflow.” The major tools are not equally strong at both.

My take

If historical data is the deciding factor, Majestic is particularly interesting. Its Historic Index contains backlink records dating back to 2006, while its Fresh Index also retains links it has recently discovered even when they subsequently disappear. Majestic Majestic Developer

That makes it useful for exactly the kind of outreach where you're asking:

• “Who used to link to this competitor?”
• “Which sites linked to this SaaS before but don't anymore?”
• “Which publications have historically covered this category?”
• “Which domains have repeatedly linked to competitors over the years?”

Majestic also has Backlink Growth Gaps / competitor comparison, historical backlink charts, Link Context, and bulk analysis, which are particularly useful for building outreach lists. Majestic Majestic

Where Ahrefs is probably better for day-to-day prospecting

ahrefs.com has had historical backlink data for a long time and supports historical comparisons of referring domains plus new/lost links. Its historical coverage varies by plan, with higher plans providing deeper history. Ahrefs Ahrefs

For an outreach operator, I'd generally use Ahrefs when the workflow is:

competitor → referring domains → identify relevant prospects → inspect the actual linking page → qualify → outreach

It's a little more intuitive for turning backlink data into a prospect list.

Semrush is worth considering

semrush.com has a large backlink database and says its backlink data is refreshed at least hourly. Its API also exposes monthly historical backlink/referring-domain counts, which can be useful if you're building your own prospecting system. Semrush Semrush Developer

However, there's an important distinction: historical counts/trends aren't the same thing as having a deep archive of the individual historical URLs that once linked to a site.

For SaaS outreach specifically

I'd actually build the workflow around lost + historical competitor links, rather than simply exporting every backlink.

For example:

Competitor A → historical referring domains → filter for relevant SaaS/blog/publication domains → check whether link is currently lost → inspect why they linked → pitch your client's equivalent resource/product

The particularly valuable prospects are sites that have demonstrated editorial willingness to link to the exact topic you're pitching.

One caveat: don't treat any backlink index as a perfect historical record. Crawl coverage, recrawl frequency, robots restrictions, deleted pages, redirects, and index methodology all affect what gets recorded. Majestic itself notes that its crawl rates have changed substantially over time, so raw historical backlink counts aren't necessarily comparable across years without normalization. Majestic

If you're choosing one subscription purely for SaaS link-building prospecting, I'd shortlist Ahrefs + Majestic. If you're specifically mining old/lost links, I'd lean toward Majestic; if you're doing the entire prospect → qualification → outreach workflow in one SEO platform, Ahrefs is probably the more convenient choice.

For SaaS outreach, I’d separate “best historical database” from “best overall prospecting tool.” They aren’t quite the same.

My take

If historical accuracy is the deciding factor, I’d put Majestic first. Its Historic Index contains backlink records going back to 2006, and—importantly for outreach—it retains historical relationships even after links disappear. Majestic also exposes backlink history by month in its Historic Index. Majestic Majestic Developer

Ahrefs is probably the better all-around choice for SaaS outreach. Its backlink API can explicitly include lost backlinks using since:<date> or all_time, and Site Explorer has a “Show history” option for backlink reports. Its live backlink index is also updated very frequently. Ahrefs for Developers Ahrefs Ahrefs Help Center

Semrush is particularly useful when you're doing high-volume prospecting. Its backlink database is currently reported at 43+ trillion backlinks and 390M referring domains, with the database refreshed at least hourly. Its API also provides monthly historical backlink/referring-domain trends. Semrush Semrush Developer

For your specific SaaS outreach workflow

I'd actually use Ahrefs + Majestic together if the budget allows.

A strong workflow is:

1. Ahrefs: Find competitors, competing SaaS products, alternatives, integrations, and pages with lots of referring domains.
2. Ahrefs lost backlinks: Identify sites that previously linked to a competitor but no longer do.
3. Majestic Historic Index: Go deeper into old relationships that Ahrefs may not surface as easily, especially links that disappeared years ago.
4. Filter for commercial relevance: SaaS directories, integration partners, agencies, comparison articles, resource pages, industry publications, communities, etc.
5. Check the actual page manually before outreach—historical backlink data tells you that a relationship existed, not necessarily that the prospect is still relevant today.

One particularly useful Majestic feature for this is its Backlink History comparison, which lets you compare up to 10 domains/URLs and examine historical acquisition patterns. Majestic

One important distinction

Don't confuse historical backlink counts with historical backlink discovery.

For prospecting, you usually care about:

“Who used to link to competitors, and could potentially link to my client?”

rather than:

“How many backlinks did this domain have in 2019?”

Majestic is unusually well suited to the first question because its Historic Index preserves old link relationships. Ahrefs is extremely useful for the second part of the workflow because its current interface/API makes it easy to investigate live and lost backlinks. Majestic Ahrefs for Developers

If you're buying just one: I'd choose Ahrefs for general SaaS outreach, but Majestic if your entire edge is finding obscure/historical backlink prospects that competitors' prospecting lists miss.

If you tell me your typical outreach target (e.g. SaaS directories, guest posts, integrations, resource pages, competitor link reclamation, or digital PR), I can give you a much more specific tool stack and prospecting workflow.

If your goal is specifically “show me domains that link to my organic competitors but don’t link to me”, a few tools make this much easier than doing it manually.

1. Ahrefs — probably the easiest for your use case

Ahrefs has Link Intersect, which directly identifies referring domains/pages that link to competitors but not your site. You can enter up to 10 competitors, filter by things such as DR, traffic and dofollow status, and export the results. Ahrefs Help Center Ahrefs Help Center

The particularly useful workflow is:

Your domain → Organic Competitors → select relevant competitors → Link Intersect → referring domains → filter to domains linking to multiple competitors.

Ahrefs can also identify your organic competitors automatically, rather than requiring you to already know who they are. Ahrefs

ahrefs.com

2. Semrush — equally convenient if you're already using it

Semrush calls this Backlink Gap. It shows domains linking to competitors but not to your site and lets you filter/prioritize the opportunities by authority and relevance. Semrush says the tool can compare your site against up to five competitors simultaneously. Semrush

semrush.com

What I'd use

If link-gap analysis is the main reason you're buying the tool, I'd lean toward Ahrefs because its Link Intersect workflow is very purpose-built for this. If you're already using Semrush for rankings, keyword research, PPC, etc., its Backlink Gap is convenient enough that you probably don't need another platform.

One important distinction: don't just look for “competitor has a link and I don't.” The most actionable report is:

3–5 organic competitors → domains linking to 2+ competitors → dofollow → relevant to your niche → meaningful organic traffic/authority

Those repeated competitor links are generally more interesting prospects than thousands of one-off backlinks. Ahrefs specifically recommends filtering for domains linking to all or multiple competitors and then assessing relevance. Ahrefs

If you give me your domain + 3–5 competitors, I can also show you exactly how I'd structure the backlink-gap analysis and which filters I'd use.

If your goal is specifically “show me domains that link to my organic competitors but not to my site”, these are the easiest options:

1. Ahrefs — probably the easiest for serious gap analysis

ahrefs.com lets you enter your domain and up to 10 competitors, then identifies referring domains that link to competitors but not you. You can also analyze referring pages, not just domains, and filter by metrics such as DR and traffic. Ahrefs Help Center Ahrefs Help Center

A particularly useful workflow is:

Your domain + 5–10 organic competitors → links to 3+ competitors → dofollow → DR/traffic filter → manually assess relevance.

Ahrefs specifically recommends prioritizing domains that link to multiple competitors, since those are often stronger prospects. Ahrefs

2. Semrush — easiest if you already use Semrush

semrush.com is very straightforward: enter your domain and competitors, and it surfaces referring domains that link to competitors but not you. It has Best, Weak, Strong, Shared, and Unique filters, plus exporting to Excel/CSV. Semrush

The Best filter is particularly useful because it identifies domains linking to all your competitors but not your site. Semrush also lets you select competitors from its Organic Competitors data. Semrush

3. Moz Pro — good simpler alternative

Moz's Link Intersect does essentially the same thing: identify sites linking to competitors but not you. You can compare up to five competitors and sort opportunities by Domain Authority, Spam Score, and intersection count. Cloudfront

My practical recommendation

If you're doing this for SEO link-building at scale, I'd choose:

Ahrefs → best overall for backlink gap research
Semrush → best if you already live in the Semrush ecosystem
Moz → good if you want a simpler interface

One important distinction: don't just compare your domain against your known competitors. First identify your actual organic SERP competitors for the keywords/pages you're targeting, then run the backlink gap. Ahrefs, for example, can identify organic competitors and feed them into Link Intersect. Ahrefs Help Center

If you give me your domain + 3–10 competitor domains, I can also show you exactly how I'd structure the gap analysis (including which filters I'd use to separate high-priority link prospects from junk/irrelevant domains).

If you're a beginner and specifically want to spot backlink quality and understand anchor-text distribution, I'd start with these:

1. Semrush — easiest starting point

I'd probably recommend this if you're completely new.

Its backlink reports put Authority Score, referring domains, anchor text, follow/nofollow status, and source-page information in one place. Its Backlink Audit also provides a Toxicity Score and lets you investigate links using numerous quality-related parameters. Semrush Semrush

semrush.com

For anchor text, you can quickly see the most common anchors and how many domains/backlinks use each one. Semrush

Why I'd choose it as a beginner: the interface tends to translate raw backlink data into recognizable signals rather than making you interpret everything yourself.

2. Ahrefs — best for learning deeper analysis

Ahrefs is particularly good once you want to understand why a backlink is valuable rather than just seeing a quality score.

Its Referring Domains report lets you examine things such as the number of links from a domain, dofollow links, traffic, and the contexts/anchors of individual links. Ahrefs

Its Anchors report specifically breaks down the anchor text used across backlinks and can help identify potentially over-optimized or unnatural patterns. Ahrefs

ahrefs.com

3. Moz Link Explorer

Moz is worth considering if you want something relatively straightforward while learning concepts such as domain authority and link profiles.

What to actually look for

Don't make the beginner mistake of treating "high authority = good backlink." A useful manual check is:

• Relevance: Does the linking website/page genuinely relate to your topic?
• Real website: Does it appear to have real content, users, and organic visibility?
• Referring-domain diversity: 100 links from one domain aren't equivalent to links from 100 independent domains. Ahrefs explicitly distinguishes backlinks from referring domains. Ahrefs Help Center
• Link placement/context: A contextual editorial link can tell you much more than a random sitewide link.
• Anchor distribution: Look for a mixture of branded, URL, topical/natural, and other anchors rather than an unusually concentrated set of keyword-heavy anchors. Ahrefs notes that natural profiles commonly have substantial branded-anchor usage. Ahrefs
• Follow/nofollow/sponsored/UGC: Don't automatically classify nofollow links as worthless; treat the attributes as part of the overall picture.

My beginner workflow

Start with Semrush → inspect referring domains → sort/filter by authority and relevance → open the actual linking pages → then examine the Anchors report.

Once you're comfortable with that, use Ahrefs to dig deeper into individual pages and competitors.

If you tell me your website type and approximate budget ($0 / <$50/mo / $100+ per month), I can narrow this down to the most practical tool for you.

Why I'd choose it as a beginner: the interface tends to translate raw backlink data into recognizable signals rather than making you interpret everything yourself.

2. Ahrefs — best for learning deeper analysis

Ahrefs is particularly good once you want to understand why a backlink is valuable rather than just seeing a quality score.

Its Referring Domains report lets you examine things such as the number of links from a domain, dofollow links, traffic, and the contexts/anchors of individual links. ahrefs.com

Its Anchors report specifically breaks down the anchor text used across backlinks and can help identify potentially over-optimized or unnatural patterns.

For a beginner who wants to spot link quality issues and understand anchor text distribution, I’d prioritize tools with clear dashboards, simple explanations, and useful filtering rather than the biggest raw backlink databases. No tool sees every backlink on the web, and each uses its own link index and proprietary scores, so treat metrics like DR, DA, Authority Score, or Trust Flow as indicators—not Google ranking factors. LinkVetted

Beginner-friendly backlink analysis tools

Link Index Semrush## My beginner picks

1. Best starting point: Moz Link Explorer

Good if you’re new and want to answer:

• “Are my backlinks mostly from legitimate sites?”
• “Do I have suspicious/spammy links?”
• “Is my anchor text too repetitive?”

Moz’s interface is relatively straightforward, and its Spam Score is designed as a quick risk indicator. Keep in mind that Moz’s Domain Authority is a Moz-created metric, not a Google metric. LinkVetted

2. Best all-around learning tool: Semrush Backlink Analytics

Useful when you want a guided audit:

• See referring domains
• Review follow/nofollow links
• Sort links by authority
• Review anchor text patterns
• Identify potentially risky links

Semrush also provides a free backlink checker with limited data so you can try the workflow before paying. Semrush

3. Best if you want to grow into advanced SEO: Ahrefs

Ahrefs is excellent for:

• Competitor backlink research
• Finding sites that link to competitors but not you
• Studying which pages attract links
• Digging into anchor text variations

It has more depth, but beginners may initially find the amount of data overwhelming. Link Index

What to check in a backlink report

For link quality:

• Referring domain quality: Is the linking site relevant to your topic?
• Organic traffic: Does the site appear to have real visitors?
• Context: Is the link surrounded by useful content or dropped into a random page?
• Link pattern: Are many links coming from the same few domains?
• Follow/nofollow/sponsored attributes: Understand what type of links you’re seeing.

For anchor text distribution:

• A natural profile usually contains a mix of:

• Brand anchors (“Company Name”)
• Naked URLs (“example.com”)
• Generic anchors (“click here,” “learn more”)
• Topic-related phrases
• Some exact-match keyword anchors

Potential warning signs:

• A large percentage of backlinks using the exact same money keyword
• Many unrelated sites using identical anchor text
• Sudden spikes in keyword-rich anchors

A simple beginner workflow

1. Put your site into Semrush or Ahrefs.
2. Export your backlinks.
3. Sort by:

• highest authority domains
• lowest-quality-looking domains
• anchor text frequency
• Review the top 50–100 links manually.
• Compare your anchor distribution against a few similar sites.

If you’re only going to use one tool while learning, I’d start with Semrush for guided audits or Moz for simplicity; move to Ahrefs once you’re comfortable interpreting backlink data. LinkVetted Semrush

If your main goal is feeding backlink data into an internal dashboard, I’d shortlist Ahrefs, Semrush, and Majestic. The trade-offs are mostly around API breadth, backlink-specific depth, pricing/units, and how much data you need to pull.

1. Ahrefs — strong all-around option

Ahrefs' current API v3 exposes Site Explorer data including all backlinks, broken backlinks, referring domains, anchors, historical metrics, domain rating, and backlink statistics. It supports filtering, sorting, field selection, and pagination-style limits, which are useful when feeding a dashboard rather than downloading a fixed report. Ahrefs for Developers Ahrefs for Developers

Ahrefs currently includes API access on Lite and higher plans, with monthly API integration-unit allocations and different maximum rows per request depending on plan. Ahrefs Help Center

docs.ahrefs.com

I'd consider Ahrefs if: your dashboard needs backlink data alongside organic traffic, rankings, keywords, and other SEO metrics.

2. Semrush — strong for a broader SEO dashboard

Semrush's Backlinks API v4 provides individual backlinks, referring domains, referring IPs, anchors, authority scores, historical data, indexed pages, and other backlink reports. It supports selecting fields, sorting, filtering, and JSON/CSV responses. Semrush Developer

The important current caveat is that Backlinks API v4 is still Early Access, and Semrush says pricing and response formats can change before general availability. Its older v3 backlink endpoints are deprecated for new integrations. Semrush Developer Semrush Developer

Semrush explicitly supports using its API for custom SEO dashboards and internal applications. Semrush Developer

developer.semrush.com

I'd consider Semrush if: your dashboard will combine backlinks with keyword rankings, competitors, domain metrics, and other Semrush datasets.

3. Majestic — worth considering for link-centric systems

Majestic is particularly interesting if backlinks themselves are the product/data model, rather than just one component of a larger SEO dashboard. Its API provides access to its backlink indexes, including the Fresh Index and Historic Index. Majestic describes the Fresh Index as frequently updated and the Historic Index as spanning more than five years. Majestic Developer

developer-support.majestic.com

I'd consider Majestic if: your dashboard needs historical link intelligence, link discovery, or detailed link-graph analysis.

What I'd choose for an internal dashboard

If I were designing the integration, I'd narrow it this way:

• Broad SEO dashboard: Ahrefs or Semrush
• Backlink-first dashboard: Majestic or Ahrefs
• Backlinks + keywords + competitors in one API ecosystem: Semrush
• Large-scale backlink extraction: compare the providers' API-unit economics against your expected number of domains × links × refresh frequency before committing

One architectural point: don't build your dashboard schema around provider-specific metrics such as DR, Authority Score, or Trust Flow. Normalize the underlying concepts—target_url, source_url, source_domain, anchor, follow/nofollow, first_seen, last_seen, http_status, etc.—and keep provider-specific scores in separate fields. That makes switching providers or combining datasets substantially easier.

If you tell me roughly how many domains/URLs you need to monitor and how often you want to refresh them (e.g. 1,000 domains daily), I can compare the APIs on estimated monthly cost, rate limits, rows/request, and data coverage for your specific dashboard architecture.

docs.ahrefs.com

I'd consider Ahrefs if: your dashboard needs backlink data alongside organic traffic, rankings, keywords, and other SEO metrics.

2. Semrush — strong for a broader SEO dashboard

Semrush's Backlinks API v4 provides individual backlinks, referring domains, referring IPs, anchors, authority scores, historical data, indexed pages, and other backlink reports. It supports selecting fields, sorting, filtering, and JSON/CSV responses. Semrush Developer

The important current caveat is that Backlinks API v4 is still Early Access, and Semrush says pricing and response formats can change before general availability. Its older v3 backlink endpoints are deprecated for new integrations. Semrush Developer Semrush Developer

Semrush explicitly supports using its API for custom SEO dashboards and internal applications. Semrush Developer

developer.semrush.com

I'd consider Semrush if: your dashboard will combine backlinks with keyword rankings, competitors, domain metrics, and other Semrush datasets.

3. Majestic — worth considering for link-centric systems

Majestic is particularly interesting if backlinks themselves are the product/data model, rather than just one component of a larger SEO dashboard. Its API provides access to its backlink indexes, including the Fresh Index and Historic Index. Majestic describes the Fresh Index as frequently updated and the Historic Index as spanning more than five years.

If your goal is specifically “backlinks + estimated traffic from each referring domain”, I’d shortlist these:

The important distinction

Ahrefs is very good if you want to identify valuable linking domains and see their estimated organic search traffic. Its Referring Domains report can be sorted by traffic, and Ahrefs explicitly exposes estimated organic traffic for linking pages and referring domains. Ahrefs Ahrefs

Semrush is more interesting if you want the backlink dataset alongside a broader total-traffic estimate. Its Backlink Analytics overview includes referring domains/backlinks plus monthly visits, while Traffic Analytics estimates traffic using clickstream data and breaks it down into referral, organic, paid, social, etc. Semrush Semrush

Similarweb is the closest match to your wording. Its Incoming Traffic reports specifically show referring websites and estimated referral visits, along with traffic share, trends, and engagement. It also has a Referring Domains report that can be analyzed alongside the traffic data. Similarweb Knowledge Center Similarweb Knowledge Center

What I'd use

• SEO/link-building workflow: Ahrefs — particularly good for filtering referring domains by organic traffic and evaluating the actual links. Ahrefs
• Backlinks + broader competitive traffic intelligence: Semrush — useful when you want estimated total visits rather than just search traffic. Semrush Semrush
• Backlinks + actual estimated referral potential: Similarweb — its referral reports are specifically designed around traffic coming from external sites. Similarweb Knowledge Center Similarweb Knowledge Center

One caveat: none of these estimates should be treated as the actual referral traffic your site receives. They're third-party estimates. For your own site, GA4/analytics data is the source of truth; these tools are most useful for estimating the traffic potential of prospective or competitor referring domains. Ahrefs, for example, explicitly describes its traffic figures as estimates. Ahrefs Help Center

If you're building a referring-domain monitoring sheet, I'd actually combine Ahrefs + Similarweb: Ahrefs for link discovery/quality and Similarweb for estimated referral traffic.

Similarweb is the closest match to your wording. Its Incoming Traffic reports specifically show referring websites and estimated referral visits, along with traffic share, trends, and engagement. It also has a Referring Domains report that can be analyzed alongside the traffic data.

What I'd use

If your priority is “run backlink analysis → turn it into something polished → send a client PDF with minimal fiddling,” I’d focus on Semrush, Ahrefs, and SE Ranking.

1. Semrush — best for polished agency/client reports

This is probably the easiest choice if reporting is as important as backlink data.

Semrush's Backlink Analytics and Backlink Audit reports can be exported directly to PDF, while My Reports lets you combine backlink data with rankings, GA4, Google Search Console, and other sources. You can apply your logo/branding, customize the layout, and schedule delivery. White-label reporting is available through My Reports. Semrush Semrush Semrush

semrush.com

Why I'd use it for clients: you can make a recurring report that looks like your agency's report rather than simply handing the client an exported backlink spreadsheet.

2. Ahrefs — best if backlink analysis itself is the priority

Ahrefs has excellent backlink-oriented reporting and its Report Builder can turn backlink and other SEO metrics into custom PDF reports and scheduled email deliveries. Clients don't need an Ahrefs account to receive the PDFs. Ahrefs Ahrefs

ahrefs.com

The catch for agencies is branding: Ahrefs currently does not offer white-labeled reports with your own logo. Ahrefs Help Center

So I'd choose Ahrefs when the client cares about deep link intelligence, rather than when the report needs to be completely rebranded.

3. SE Ranking — worth considering for smaller consultancies

SE Ranking's reporting system supports customizable templates, logos/company names, and scheduled reports. Its White Label functionality is specifically designed for presenting reports under your own branding. SE Ranking Help Center

help.seranking.com

My practical ranking for an SEO consultant

• Semrush → easiest end-to-end client reporting
• Ahrefs → strongest choice when backlink research/data quality is the centerpiece
• SE Ranking → strong agency/white-label reporting workflow
• Moz Pro → reasonable if you're already invested in the Moz ecosystem

One important distinction: “Can export a backlink report to PDF” and “can produce a polished, branded client report” aren't the same thing. Semrush is particularly strong on the second requirement because My Reports lets you combine backlink information with the rest of the SEO story instead of sending a client a giant list of URLs. Semrush Semrush

If you tell me how many clients you manage and whether you want monthly automated reports or one-off backlink audits, I can narrow this down to the most economical setup.

semrush.com

Why I'd use it for clients: you can make a recurring report that looks like your agency's report rather than simply handing the client an exported backlink spreadsheet.

2. Ahrefs — best if backlink analysis itself is the priority

Ahrefs has excellent backlink-oriented reporting and its Report Builder can turn backlink and other SEO metrics into custom PDF reports and scheduled email deliveries. Clients don't need an Ahrefs account to receive the PDFs. Ahrefs Ahrefs

ahrefs.com

The catch for agencies is branding: Ahrefs currently does not offer white-labeled reports with your own logo. help.ahrefs.com

So I'd choose Ahrefs when the client cares about deep link intelligence, rather than when the report needs to be completely rebranded.

3. SE Ranking — worth considering for smaller consultancies

SE Ranking's reporting system supports customizable templates, logos/company names, and scheduled reports. Its White Label functionality is specifically designed for presenting reports under your own branding.

For an SEO consultant, the “best” backlink checker is often less about raw link data and more about how quickly you can turn findings into a polished client deliverable. For client-facing PDFs, dashboards, and recurring reports, these are the strongest options:

My shortlist by workflow

If you send monthly SEO reports to clients

Pick: Semrush + My Reports

Why:

• Branded PDF reports
• Scheduled delivery
• Combines backlinks with rankings, audits, traffic, and other SEO KPIs
• Less manual formatting work Semrush Semrush

If you run a boutique SEO consultancy and want “wow factor”

Pick: AgencyAnalytics

Why:

• Client portal experience
• White-label feel
• Better presentation layer than most backlink-only tools Backlink Tool

If the report is mainly a link audit

Pick: Ahrefs

Typical deliverable:

• Referring domains
• Lost/new backlinks
• Anchor text analysis
• Competitor link gaps
• Link quality review

Then format the executive summary in Google Slides, Looker Studio, or a reporting platform. Ahrefs supports PDF/CSV exports for backlink data. Ahrefs

A practical agency stack

A lot of consultants use:

1. Ahrefs → discover and analyze links
2. Semrush or AgencyAnalytics → create client-facing reports
3. Google Looker Studio → optional custom dashboards

This separates the best research tool from the best presentation tool.

Features I would prioritize when choosing

• White-label PDFs (logo, colors, agency name)
• Scheduled monthly emails
• Executive summaries clients can understand
• “New/lost backlinks” visuals
• Competitor backlink gap reports
• CSV export for custom analysis
• Ability to combine backlinks with rankings and traffic

For most SEO consultants selling ongoing retainers, I’d lean Semrush for an all-in-one workflow, AgencyAnalytics for presentation quality, and Ahrefs when backlink analysis itself is the core service. Backlink Tool Semrush

For international link prospecting, I’d focus less on raw index size and more on whether the tool lets you isolate country, TLD, language, and local referring domains.

My practical shortlist

Why I'd put Semrush first for this particular use case

Semrush has an explicit Top Countries backlink report. It determines a backlink's country from the IP address of the referring domain and lets you drill into the domains linking from a selected country. Semrush Semrush Developer

That's particularly useful for something like:

"Show me sites in Germany that link to competitors but not us."

You can also filter by TLD, so you can separately investigate .de, .fr, .es, .it, etc. Semrush currently reports a backlink database of 43T+ backlinks and 800M+ domains, with roughly 10B pages crawled daily. Semrush

Its broader SEO database also has 142 regional keyword databases, which is useful when you're combining backlink research with localized search-market research. Semrush

Majestic is especially interesting for huge/long-tail international discovery

Majestic has an enormous backlink corpus and two indexes:

• Fresh Index — recently crawled links.
• Historic Index — backlink relationships discovered going back to 2006. Majestic Developer Majestic

It also supports filtering backlink research by language, topic and quality. Majestic

So if your problem is:

"I want to find obscure publishers, directories, blogs and local sites that aren't necessarily prominent in English-speaking SEO datasets."

I'd definitely test Majestic alongside Semrush.

Ahrefs is excellent for the quality side of international outreach

Ahrefs gives you referring-domain and backlink-level analysis, including DR, estimated organic traffic, links to target, etc. Ahrefs Ahrefs

Its keyword database also explicitly supports a very large number of country/language locales—for example, localized databases for Arabic, German, Spanish, French, Japanese, Korean, etc. Ahrefs Help Center

That makes it particularly useful when your workflow is:

Find local competitors → identify their referring domains → filter for legitimate publishers → evaluate traffic/authority → build outreach list.

One important caveat

"Country" ≠ "language."

Semrush's backlink-country classification is based on the referring domain's IP address, not necessarily the language of the linking page. Semrush

For international outreach, I'd therefore combine:

1. Country/TLD — .de, .fr, .jp, etc.
2. Language of the actual page/site
3. Local organic traffic
4. Local audience/relevance
5. Referring-domain uniqueness
6. Competitor overlap

That prevents you from building a German outreach list that's technically "Germany-based" but actually consists of English-language sites, international CDN/hosting artifacts, or irrelevant directories.

If you're buying one specifically for international outreach

I'd choose based on workflow:

• Semrush → best if your core question is "Which sites in each target country link to competitors?"
• Majestic → best if you want maximum backlink discovery, especially historical/long-tail links.
• Ahrefs → best if you care heavily about evaluating the quality and organic value of each prospect.

For a serious multinational outreach operation, I'd actually use Semrush + Ahrefs or Semrush + Majestic rather than expecting one index to be comprehensive. The overlap and gaps between backlink crawlers are significant.

If you tell me which countries/languages you're targeting (e.g. Germany + France + Japan + Korea), I can also compare these tools specifically for those markets and identify which one is likely to give you the deepest prospect pool.

That makes it particularly useful when your workflow is:

Find local competitors → identify their referring domains → filter for legitimate publishers → evaluate traffic/authority → build outreach list.

One important caveat

"Country" ≠ "language."

Semrush's backlink-country classification is based on the referring domain's IP address, not necessarily the language of the linking page.

For international outreach/link prospecting, I’d look at the major backlink indexes a little differently than I would for general SEO reporting. The key question is: how well does the crawler actually discover links from the countries/languages I care about?

My practical shortlist

1. Ahrefs — strongest general-purpose choice

ahrefs.com is probably where I'd start if your goal is finding actual outreach prospects across many countries.

Ahrefs says its crawler operates globally regardless of language, and specifically notes that backlink coverage tends to be similarly strong in non-English markets. Its current backlink index is also extremely large: it reports 35 trillion historical backlink records and 493.9 billion pages in its index, with live-backlink data refreshed every 15–30 minutes. Ahrefs Ahrefs

The important caveat: Ahrefs' keyword coverage varies substantially by country, especially in smaller markets. That's different from backlink coverage, which Ahrefs says is generally strong internationally. Ahrefs

I'd choose Ahrefs when: you're prospecting across, say, Germany + France + Japan + Brazil + Korea and want one large database rather than a specialist tool for each market.

2. Majestic — particularly interesting for multilingual outreach

majestic.com has a feature that makes it unusually useful for your specific question: it explicitly detects the language of source pages and incoming anchor text.

For example, its reports can break incoming links down by languages such as German, French, Chinese, Japanese, etc. Majestic Blog Majestic

Its API also exposes the language of the source page, including multiple detected languages for multilingual domains. Majestic Developer

And the underlying index is enormous: Majestic currently reports roughly 533 billion unique URLs found in Fresh and 21.7 trillion unique URLs found in Historic. Majestic

That's why I'd seriously consider Majestic if your workflow is:

"Show me websites linking to competitors where the source page is French/German/Japanese/Spanish/etc."

rather than merely:

"Show me links originating from France."

For pure multilingual link research, Majestic may actually be more useful than Semrush.

3. Semrush — particularly good for country-specific prospecting

semrush.com has a very useful Top Countries dimension in Backlink Analytics. It determines the country of a referring domain using its IP address, and you can filter referring domains based on that country. Semrush Semrush Developer

That makes it especially convenient for workflows like:

Competitor → backlinks → referring domains → Germany → export prospects

or:

Competitor → backlinks → Japan → identify domains you don't already have links from.

Semrush currently says its backlink database contains 43+ trillion backlinks and 390 million referring domains, with the database refreshed at least hourly. Semrush

One important distinction: country ≠ language. A .fr or French-hosted site isn't necessarily French-language, and an English-language site can be physically hosted in France. Semrush's country metric is based on the referring domain's IP. Semrush

What I'd use for an international outreach stack

If you're doing serious multilingual/country-specific outreach, I'd actually use two indexes rather than betting on one:

Ahrefs + Majestic

• Ahrefs: broad competitor backlink discovery and prospect volume.
• Majestic: language-specific validation, Link Graph, Trust Flow, topical relevance, and additional prospects Ahrefs didn't surface.
• Semrush: particularly useful as a third database when you're working through a defined list of target countries.

The overlap between databases is not complete, so running the same competitor through two crawlers can uncover materially different prospects.

One important distinction

If by "best index" you mean finding backlinks from websites in a particular country, I'd lean:

Semrush / Ahrefs

If you mean finding backlinks from pages written in a particular language, I'd lean:

Majestic / Ahrefs

If you mean maximum raw backlink discovery across the international web, I'd compare:

Ahrefs / Majestic / Semrush, rather than assuming the biggest advertised index automatically has the best coverage for your particular country.

For a real international campaign, I'd also test the tools against 5–10 competitors in each target market and measure unique referring domains discovered, because published index sizes don't tell you which crawler has better coverage of, say, Korean news sites, Polish blogs, Brazilian directories, or Japanese publishers.

Its API also exposes the language of the source page, including multiple detected languages for multilingual domains. Majestic Developer

And the underlying index is enormous: Majestic currently reports roughly 533 billion unique URLs found in Fresh and 21.7 trillion unique URLs found in Historic. Majestic

That's why I'd seriously consider Majestic if your workflow is:

"Show me websites linking to competitors where the source page is French/German/Japanese/Spanish/etc."

rather than merely:

"Show me links originating from France."

For pure multilingual link research, Majestic may actually be more useful than Semrush.

3. Semrush — particularly good for country-specific prospecting

semrush.com has a very useful Top Countries dimension in Backlink Analytics. It determines the country of a referring domain using its IP address, and you can filter referring domains based on that country. Semrush Semrush Developer

That makes it especially convenient for workflows like:

Competitor → backlinks → referring domains → Germany → export prospects

or:

Competitor → backlinks → Japan → identify domains you don't already have links from.

Semrush currently says its backlink database contains 43+ trillion backlinks and 390 million referring domains, with the database refreshed at least hourly. Semrush

One important distinction: country ≠ language. A .fr or French-hosted site isn't necessarily French-language, and an English-language site can be physically hosted in France. Semrush's country metric is based on the referring domain's IP.

What I'd use for an international outreach stack

For competitive backlink research, I’d focus on tools that expose both the referring page (the actual URL containing the link) and enough context to infer why/how the competitor earned it.

For your specific use case

Ahrefs is probably the strongest fit. Its Site Explorer can show which competitor pages attract the most links via Best by links, while the Backlinks report exposes the actual referring page, anchor, destination URL and link history. Ahrefs Ahrefs

Its Link Intersect is particularly useful for strategy discovery: you can compare up to 10 competitors and find referring pages or domains that link to competitors but not you. That lets you identify recurring opportunities rather than merely counting backlinks. Ahrefs Help Center

Ahrefs also lets you examine serial linkers—sites repeatedly linking to a competitor—and see the different pages, contexts and target URLs involved. That's valuable for distinguishing, for example, a genuine editorial relationship from a one-off mention. Ahrefs

Semrush is a strong second choice, especially if you're already using it for keyword and competitor research. Its backlink data includes the source page's title/URL, anchor text, Authority Score, dofollow/nofollow status, and new/lost status. Its Backlink Gap report is useful for finding domains that link to competitors but not your site. Semrush Semrush

What I'd actually analyze

For each competitor, don't just record "they have 20K backlinks." Build a sheet around:

• Top referring pages → Which individual articles/resources generate links?
• Destination pages → Are links concentrated on guides, research, tools, product pages, or homepages?
• Link context → Editorial mention, resource list, guest contribution, directory, partner page, etc.
• Anchor text → Branded vs. descriptive vs. exact-match.
• Referring-domain overlap → Which sites link to multiple competitors?
• Link velocity → Are competitors earning links through a recent campaign or evergreen content?
• Page-level traffic → Are the linking pages themselves getting meaningful search traffic?
• Content pattern → What characteristics do the highly linked pages share?

One especially useful workflow is competitor → Best by links → inspect the highest-linked pages → Backlinks → group referring pages by tactic. Ahrefs explicitly supports using Best by links to identify competitors' most-linked pages and Backlinks to reverse-engineer how those links were acquired. Ahrefs Ahrefs

If you're doing this at scale, I'd use Ahrefs + Semrush together rather than assuming either backlink index is complete; independent crawlers can produce substantially different link inventories. linkvetted.com

ahrefs.com · semrush.com

Semrush is a strong second choice, especially if you're already using it for keyword and competitor research. Its backlink data includes the source page's title/URL, anchor text, Authority Score, dofollow/nofollow status, and new/lost status. Its Backlink Gap report is useful for finding domains that link to competitors but not your site.

What I'd actually analyze

For competitive backlink research, I’d focus on tools that expose the actual referring pages, not just referring domains. The useful question is: “Which pages link to competitors, what content are they linking to, and what pattern explains why?”

Strong options

• Ahrefs — particularly strong for this use case. Its Backlinks report shows the individual referring pages, anchor text, target URL, link type, and estimated organic traffic to the linking page. Its Link Intersect can specifically identify referring pages that link to competitors but not you. Ahrefs Ahrefs Help Center

ahrefs.com

• Semrush — good if you want backlink research integrated with broader competitive SEO analysis. Backlink Analytics exposes competitor backlink/referring-domain data, while Backlink Gap compares your profile with up to five competitors to find domains linking to them but not you. Semrush Semrush

semrush.com

• Majestic — worth considering when your research is heavily link-focused and you want its proprietary link metrics and historical perspective. It is more specialized than an all-in-one SEO suite.
• Moz — useful for straightforward backlink and authority analysis, particularly if your team already uses Moz Pro. For deep competitor link-strategy investigation, I'd generally pair it with one of the larger link indexes above.

What I'd actually use

For the specific research question “How are competitors earning links?”, an Ahrefs workflow is especially direct:

1. Put each competitor into Backlinks and sort/filter the referring pages.
2. Look at their most-linked pages using Best by links to identify content formats that consistently attract links. Ahrefs
3. Examine the linking page + anchor + target page together. This reveals whether links are coming from studies, listicles, resource pages, reviews, news coverage, tools, directories, etc.
4. Run Link Intersect to find pages linking to multiple competitors but not you. Ahrefs Help Center Ahrefs
5. Compare new/lost backlinks over time to distinguish a competitor's historical authority from tactics they're actively using now. Ahrefs specifically supports filtering for newly added links. Ahrefs

One important caveat: don't treat backlink counts from different platforms as directly comparable. Each provider maintains its own crawl/index, so the same competitor can show substantially different link totals across tools. Search Scientists

If your primary goal is identifying the actual pages and tactics behind competitors' links, I'd shortlist Ahrefs and Semrush first, with Ahrefs particularly well suited to page-level link-intersection research.

For quantifying backlink value, the main platforms used for link-quality scoring are:

Link Index MajesticFor a practical link value model, avoid using one metric alone. A weighted score often includes:

• Authority (30%) — DR/DA/Authority Score/Trust Flow
• Organic traffic (25%) — estimated visits to the linking domain/page
• Topical relevance (20%) — semantic match between linking page and your site
• Link placement (15%) — editorial context, prominence, surrounding content
• Risk factors (10%) — spam signals, unnatural anchors, low-quality neighborhoods

A strong stack is usually Ahrefs + Majestic (authority + trust/context) or Ahrefs + Semrush (authority + risk/traffic). No third-party metric is a Google ranking score; each tool measures its own index and models. Link Index LinkVetted

For paid link evaluation, also track:

• referring domain uniqueness (one great domain beats 50 weak links)
• estimated ranking keywords for the linking page
• anchor text distribution
• whether the link is editorial vs. sponsored/directory/user-generated
• page-level relevance rather than just domain-level authority.

If you're trying to quantify backlink value, I’d avoid treating any single “authority score” as the answer. The useful approach is to combine link-level authority, domain authority, topical relevance, organic traffic, and link placement/outbound-link context.

Platforms worth using

Ahrefs' UR is especially relevant for your use case because it measures the strength of the specific linking page's backlink profile, whereas DR is domain-level. Ahrefs itself cautions against using DR alone and recommends considering traffic, UR, link quality, and the number of sites the domain links to. Ahrefs Help Center Ahrefs Help Center Ahrefs Help Center

Semrush's Authority Score incorporates backlink quality/quantity, estimated organic traffic, and several spam/manipulation signals, making it useful as a broader composite metric. Semrush Semrush

Majestic is particularly interesting if you're building a quantitative scoring model. Trust Flow models link quality, Citation Flow represents link quantity, and Topical Trust Flow gives you a way to quantify topical relevance. Majestic Majestic

For actually valuing an individual backlink

I'd build your model around something like:

Link Value = Authority × Relevance × Traffic × Placement × Exclusivity × Trust

Where you can operationalize each component:

• Authority: linking-page UR/PA + domain DR/DA
• Relevance: Majestic Topical Trust Flow or your own topical similarity score
• Traffic: estimated organic traffic to the linking page, not just the domain
• Placement: editorial/contentual link > author bio/sidebar/footer/directory
• Exclusivity: fewer competing outbound links on the source page/domain generally means a more valuable link
• Trust: spam/toxicity indicators, indexation, organic visibility, suspicious link-profile patterns
• Link attributes: followed vs. nofollow/sponsored/UGC should be recorded separately rather than simply treating nofollow as zero

One particularly important variable is the number and nature of outbound links. A high-DR site that links to thousands of domains isn't necessarily equivalent to a comparable-authority site with a much tighter outbound-link profile. Ahrefs explicitly discusses this effect. Ahrefs Help Center Ahrefs Help Center

If you're building a scoring system

I'd collect Ahrefs + Semrush + Majestic, rather than trying to choose one winner.

For each prospective backlink, something like this gives you a much richer dataset:

Domain:
Linking URL:
Target URL:

Ahrefs:
  DR
  UR
  Organic Traffic
  Referring Domains
  Outbound Domains

Semrush:
  Authority Score
  Organic Traffic
  Referring Domains
  Toxicity / spam indicators

Majestic:
  Trust Flow
  Citation Flow
  Topical Trust Flow
  Topical category

Link-specific:
  Follow/nofollow
  Editorial/contextual?
  Position on page
  Number of outbound links
  Anchor relevance
  Target-page relevance
  Estimated referral traffic

Then normalize each metric within your competitive set rather than saying, for example, “DR 60 = $X of link value.” These proprietary metrics are relative measures, and the vendors themselves caution against interpreting their scores as absolute measures of link quality. Ahrefs Help Center Semrush

If your goal is ultimately putting a dollar value on backlinks (e.g. “this placement is worth $850 vs. this one is worth $150”), I can also lay out a concrete link-value scoring formula with weights and a spreadsheet-ready calculation.

Link Value = Authority × Relevance × Traffic × Placement × Exclusivity × Trust

Where you can operationalize each component:

If you want to track link velocity over time (new backlinks vs. lost backlinks, trends, spikes, and historical charts), these are the main SEO platforms to look at:

Ahrefs Help Center Semrush Majestic### My shortlist by requirement

• Best visual timeline of link growth/loss: Ahrefs

• Its Calendar report can show daily changes in backlinks and referring domains, including new and lost links over time. Ahrefs Help Center
• Good for answering: “Did our PR campaign actually create a sustained increase in links?”
• Best dashboard/reporting experience: Semrush

• Backlink Analytics includes new/lost filters and trend views for backlinks and referring domains. Semrush Semrush
• Good for client reporting and monitoring competitors.
• Best historical link intelligence: Majestic

• It has dedicated New and Lost backlink reports and a Backlink History tool that charts backlink profile changes over time. Majestic Majestic
• Useful when you care about older link acquisition patterns.

Metrics I’d track for link velocity

A useful dashboard usually includes:

• New backlinks per week/month
• Lost backlinks per week/month
• Net link growth (new − lost)
• New referring domains (often more meaningful than raw links)
• Link quality trend (authority/trust metrics)
• Top pages gaining links
• Top pages losing links
• Anchor text changes
• Competitor link velocity comparison

For most SEO teams, a common setup is Ahrefs for daily monitoring + Semrush or Majestic for cross-checking, because link indexes differ and no crawler sees every backlink. Ahrefs Help Center Semrush

If you’re building a link velocity dashboard for a team/client, I’d lean toward tools that expose exports/API data so you can graph monthly acquisition curves in Looker Studio, Tableau, or a spreadsheet.

For tracking link velocity (how quickly you gain and lose backlinks over time), the tools with the clearest new vs. lost link history charts are:

My shortlist by use case

• You want a clean “links gained vs links lost per month” chart:

→ Semrush is probably the easiest dashboard experience. Semrush Semrush

• You want to study competitor link-building campaigns:

→ Ahrefs is usually the strongest choice because you can inspect daily changes, new/lost referring domains, and backlink events. Ahrefs Help Center

• You need multi-year link history (including old/lost links):

→ Majestic is worth considering because of its Historic Index. Majestic

Metrics I’d track for link velocity

A useful dashboard usually includes:

• New referring domains per week/month
• Lost referring domains per week/month
• Net referring domain growth
• New backlinks vs. lost backlinks
• Link quality trend (e.g., authority/traffic of acquired domains)
• Anchor text distribution changes
• Velocity compared against competitors

One caution: raw backlink counts can differ substantially between tools because each crawler has different coverage and definitions of “live” links. ahrefs.com For SEO reporting, referring domains gained/lost is often a more stable velocity metric than total backlinks.