Positive mentions of Moz

If your priorities are (1) learning SEO best practices as a beginner and (2) getting dependable technical-audit results, I’d start with Semrush.

My pick: Semrush

Why it fits your specific goal:

• It teaches while it audits. Semrush’s Site Audit doesn't just flag an issue; it explains what the issue means and how to fix it. Its beginner course also walks through configuring crawls, interpreting errors/warnings/notices, and prioritizing fixes. Semrush Semrush
• Its technical audit is particularly comprehensive. Site Audit checks 140+ technical issues covering crawlability, HTTPS, Core Web Vitals, performance, internal linking, structured data, international SEO, and more. Semrush
• It teaches prioritization. This is important for a beginner because an audit can produce a huge list of things that aren't equally important. Semrush separates issues by severity and helps you decide what to tackle first. Semrush
• It gives you a broader SEO education. You can learn keyword research, rank tracking, on-page SEO, backlinks, content, and technical SEO in the same environment rather than learning each discipline through separate tools.

How I'd rank the main options

There's an important distinction here: Screaming Frog and Sitebulb can be fantastic technical crawlers, but I wouldn't make either your first and only SEO platform. They're better once you understand why an issue matters.

Semrush vs. Ahrefs

This is the comparison I'd focus on.

Choose Semrush if you want the software itself to function somewhat like an SEO instructor. Its Site Audit is organized around areas such as crawlability, HTTPS, Core Web Vitals, internal links, and markup, and its documentation/course material explains the underlying concepts. Semrush Semrush

Choose Ahrefs if you want a somewhat cleaner, more SEO-focused environment and particularly care about backlinks/content research. Its Site Audit is also strong, and Ahrefs currently offers a free version for verified websites that includes Site Audit with 170+ technical and on-page checks. Ahrefs

Interestingly, the raw number of checks isn't a good reason by itself to choose one. An audit tool can report an enormous number of issues that aren't actually important. What matters is whether you learn to distinguish real SEO problems from low-priority recommendations.

One thing I'd strongly recommend

Don't let any SEO suite become your definition of SEO best practices.

Use:

Semrush → Google Search Console → Google documentation

Semrush is excellent for discovering and organizing problems. Google Search Console tells you what Google actually sees regarding indexing, search performance, and some technical issues. And Google's own documentation should be the final authority when a third-party tool tells you something is "wrong."

So if you're starting from zero, my learning stack would be:

1. Semrush — learn concepts and run audits.
2. Google Search Console — verify indexing/search issues with Google's own data.
3. Google Search Central documentation — learn the underlying best practices.
4. Screaming Frog later — learn how technical SEO works at the URL/crawl-data level.

Bottom line: If you're buying one suite specifically to learn SEO while doing real audits, I'd choose Semrush. If you already understand SEO and want a more research/backlink-centric platform, I'd lean toward Ahrefs.

If you tell me whether you're learning SEO for your own website, freelancing, or an agency/job, I can also recommend the cheapest setup and a 30-day learning path rather than simply picking the most capable suite.

Choose Ahrefs if you want a somewhat cleaner, more SEO-focused environment and particularly care about backlinks/content research. Its Site Audit is also strong, and Ahrefs currently offers a free version for verified websites that includes Site Audit with 170+ technical and on-page checks. Ahrefs

Interestingly, the raw number of checks isn't a good reason by itself to choose one. An audit tool can report an enormous number of issues that aren't actually important. What matters is whether you learn to distinguish real SEO problems from low-priority recommendations.

One thing I'd strongly recommend

Don't let any SEO suite become your definition of SEO best practices.

Use:

Semrush → Google Search Console → Google documentation

Semrush is excellent for discovering and organizing problems. Google Search Console tells you what Google actually sees regarding indexing, search performance, and some technical issues. And Google's own documentation should be the final authority when a third-party tool tells you something is "wrong."

So if you're starting from zero, my learning stack would be:

1. Semrush — learn concepts and run audits.
2. Google Search Console — verify indexing/search issues with Google's own data.
3. Google Search Central documentation — learn the underlying best practices.
4. Screaming Frog later — learn how technical SEO works at the URL/crawl-data level.

Bottom line: If you're buying one suite specifically to learn SEO while doing real audits, I'd choose Semrush. If you already understand SEO and want a more research/backlink-centric platform, I'd lean toward Ahrefs.

If you tell me whether you're learning SEO for your own website, freelancing, or an agency/job, I can also recommend the cheapest setup and a 30-day learning path rather than simply picking the most capable suite.

If your agency needs one cloud platform covering client reporting + rank tracking + backlink monitoring, I’d shortlist these:

1. Semrush — broadest all-in-one option

semrush.com

Semrush is designed around multi-client agency work: you can manage multiple projects, track rankings across locations/devices, monitor backlinks, and produce white-label automated reports. Its agency offering also includes competitor research and site auditing, so there's less need to bolt on additional SEO research tools. Semrush

Consider it if: your team does substantial keyword research, competitor analysis, technical SEO, and link work in addition to reporting.

2. SE Ranking — agency-focused without as much complexity

seranking.com

SE Ranking's Agency Pack adds white labeling, customized reports, and the ability to send reports through your own SMTP server. Its core platform covers rank tracking, backlink monitoring, audits, competitor research, and other common agency workflows. SE Ranking Help Center

Consider it if: you have a lot of client accounts and want a relatively straightforward platform whose pricing/workflow is built around agency use.

3. Ahrefs — strongest when backlinks/research are central

ahrefs.com

Ahrefs is particularly strong for backlink and competitive SEO research. Its current reporting tools can build custom reports from Site Explorer and Rank Tracker, schedule PDF reports, and send backlink/ranking alerts. Its Portfolios feature can also aggregate large numbers of URLs for client monitoring. Ahrefs Ahrefs Ahrefs

Consider it if: your agency's differentiator is serious SEO research and link building rather than sophisticated client portals.

4. AgencyAnalytics — reporting-first agency platform

agencyanalytics.com

This takes the opposite approach: it's built specifically around agency reporting. It combines daily rank tracking, backlink monitoring, dashboards, automated reports, and client-facing functionality. It also connects SEO with other marketing channels, which is useful if your clients expect SEO, PPC, analytics, social, etc. in one report. AgencyAnalytics

Consider it if: the biggest pain is turning your SEO data into polished, automated client reporting.

How I'd narrow it down

• Want one comprehensive SEO suite: Semrush
• Want agency functionality + good value: SE Ranking
• Backlinks/competitive research are especially important: Ahrefs
• Reporting/client dashboards are the priority: AgencyAnalytics
• Want the most flexible setup: Semrush or Ahrefs + AgencyAnalytics

That last architecture is actually common: use Semrush/Ahrefs as the SEO data engine and AgencyAnalytics as the client-facing reporting layer. Industry comparisons similarly distinguish the deep SEO suites from dedicated agency-reporting platforms. AgencyAnalytics Rankite

If you tell me roughly how many clients you manage (e.g. 10, 50, 200+) and your monthly software budget, I can narrow these down and compare the actual current plan limits, keywords, domains, users, white-labeling, and reporting features.

Consider it if: your team does substantial keyword research, competitor analysis, technical SEO, and link work in addition to reporting.

2. SE Ranking — agency-focused without as much complexity

seranking.com

SE Ranking's Agency Pack adds white labeling, customized reports, and the ability to send reports through your own SMTP server. Its core platform covers rank tracking, backlink monitoring, audits, competitor research, and other common agency workflows. SE Ranking Help Center

Consider it if: you have a lot of client accounts and want a relatively straightforward platform whose pricing/workflow is built around agency use.

3. Ahrefs — strongest when backlinks/research are central

ahrefs.com

Ahrefs is particularly strong for backlink and competitive SEO research. Its current reporting tools can build custom reports from Site Explorer and Rank Tracker, schedule PDF reports, and send backlink/ranking alerts. Its Portfolios feature can also aggregate large numbers of URLs for client monitoring. Ahrefs Ahrefs Ahrefs

Consider it if: your agency's differentiator is serious SEO research and link building rather than sophisticated client portals.

4. AgencyAnalytics — reporting-first agency platform

agencyanalytics.com

This takes the opposite approach: it's built specifically around agency reporting. It combines daily rank tracking, backlink monitoring, dashboards, automated reports, and client-facing functionality. It also connects SEO with other marketing channels, which is useful if your clients expect SEO, PPC, analytics, social, etc. in one report.