Best software · Marketing
10 Best Technical SEO Crawlers of 2026
This list is for technical SEOs, agency auditors and in-house teams who need to find what stops pages from being crawled, rendered, indexed or loaded quickly. We compared documented features and published prices for 10 crawlers: desktop tools you run on your own machine, cloud crawlers that also read server logs, enterprise platforms sold through a demo, and the site audit modules inside two big SEO suites. Scores weigh features at 40%, ease of use at 30% and value at 30%. Features are judged on crawl scale, JavaScript rendering, log file and Search Console data, crawl comparison and how much raw data you can extract. Prices are the vendors' own US dollar figures where the page showed them; Sitebulb and the three enterprise platforms are marked as pending because their pages did not show a USD figure when we checked.
By the Mojolin research desk · Updated November 9, 2026 · 10 tools compared · Prices checked on vendor pages, latest November 9, 2026
Questions or corrections: editorial@mojolin.com
Mojolin is self-funded How we score
Screaming Frog SEO Spider is our top pick because one $279 yearly licence removes the 500 URL cap and adds JavaScript rendering, custom extraction, crawl comparison against staging and Google Analytics, Search Console and PageSpeed Insights data, all on your own computer. Sitebulb is a close second for auditors who want each issue explained and prioritized, with more than 300 Hints on Pro and a 14 day trial. JetOctopus is the strongest cloud option for big sites, pairing 500,000 crawled URLs and 2 million log lines a month with unlimited seats from $349 a month billed annually. Lumar, Botify and Oncrawl are enterprise platforms sold by demo that crawl millions of pages and add monitoring, bot analytics or QA tests. Semrush and Ahrefs suit marketers who want an audit inside a wider SEO suite, Netpeak Spider is the budget desktop crawler at $20 a month, and Moz Pro adds a weekly automatic crawl to its rank tracking plans.
Top picks
Best overall
Screaming Frog SEO Spider
8.9 / 10
Hands-on technical SEOs who want full control of crawl settings and raw data at a low yearly price.
Read the review →Runner-up
Sitebulb
8.8 / 10
Consultants and agencies who want audits that explain and rank issues for clients and developers.
Read the review →Also great
JetOctopus
8.3 / 10
In-house teams on large sites that want crawl budget and bot behavior data in one place.
Read the review →Comparison table
| # | Tool | Pricing | Score | |
|---|---|---|---|---|
| 1 | Screaming Frog SEO Spider | Hands-on technical SEOs who want full control of crawl settings and raw data at a low yearly price. | Free version up to 500 URLs; paid licence $279 per user per year | 8.9 |
| 2 | Sitebulb | Consultants and agencies who want audits that explain and rank issues for clients and developers. | See vendor pricing (USD check pending) | 8.8 |
| 3 | JetOctopus | In-house teams on large sites that want crawl budget and bot behavior data in one place. | Growth plan $349 per month billed annually, or $459 per month billed quarterly | 8.3 |
| 4 |  Lumar | Enterprise SEO, engineering and accessibility teams that need fast crawls and automated QA. | See vendor pricing (USD check pending) | 8.1 |
| 5 |  Botify | Large ecommerce and enterprise sites that want crawling tied to bot analytics and automation. | See vendor pricing (USD check pending) | 8.0 |
| 6 |  Semrush Site Audit | Marketing teams that want a scheduled site audit inside the SEO suite they already use. | Free plan with 10 reports a day; SEO plan $139 per month, or $117.33 per month billed annually | 7.9 |
| 7 |  Oncrawl | Technical SEOs on large sites who want crawl and log data they can segment and export. | See vendor pricing (USD check pending) | 7.8 |
| 8 |  Ahrefs Site Audit | Site owners and SEOs who already use Ahrefs and want audits next to backlink and keyword data. | Free limited access via Ahrefs Free for your own sites; Lite $129 per month | 7.7 |
| 9 |  Netpeak Spider | Freelancers and small agencies who want a low-cost desktop crawler with white-label reports. | $20 per month; 3-day free trial | 7.6 |
| 10 |  Moz Pro Site Crawl | Small businesses that want automatic weekly crawls bundled with rank tracking and keyword tools. | Standard $99 per month, or $79 per month billed yearly | 7.4 |
Scoring weights
Every tool gets three editorial scores out of 10, from vendor documentation, product pages and the published price. The overall score is the weighted average below, the same method on every list. Full method
The full ranking
Rank 1 · Best overall
Screaming Frog SEO Spider
A desktop website crawler for Windows, macOS and Linux that audits links, directives, rendering, structured data and on-page elements.
screamingfrog.co.uk8.9
out of 10
Best for: Hands-on technical SEOs who want full control of crawl settings and raw data at a low yearly price.
Screaming Frog SEO Spider is the crawler most technical audits start with, and the price explains much of that: the free version crawls up to 500 URLs, and a paid licence at $279 per user per year removes the cap. The paid version adds JavaScript rendering through an integrated Chromium engine, custom extraction with CSS Path, XPath or regex, near duplicate detection, structured data validation, accessibility auditing and spelling checks. It pulls user and performance data from Google Analytics, Search Console and PageSpeed Insights for every crawled URL, and it can compare two crawls or a staging site against production with URL Mapping. Crawls can run on a schedule, export to Google Sheets or run from the command line. The trade-off is that it is a desktop app: crawl size depends on your machine's memory and storage, the interface is dense with tabs and filters, and log file analysis needs the separate Log File Analyser.
Standout feature
One yearly licence removes the 500 URL limit and adds rendering, extraction and crawl comparison.
Use cases
Agency auditors
Run a full technical audit on a new client site
Outcome: Exports of broken links, redirects, directives and duplicates
In-house SEOs
Compare a staging site against production before a release
Outcome: A list of changed canonicals, titles and status codes
Developers
Render JavaScript pages to check what search engines receive
Outcome: Rendered HTML to compare with the raw source
Key features
- JavaScript rendering with an integrated Chromium engine
- Custom extraction with CSS Path, XPath or regex
- Crawl comparison and staging against production with URL Mapping
- Google Analytics, Search Console and PageSpeed Insights integrations
- Scheduled crawls with auto export, including to Google Sheets
Pros
- Free version crawls up to 500 URLs
- Paid licence has no fixed URL cap beyond your memory and storage
- Command line automation and a Looker Studio crawl report
Cons
- Licences are per user, so each auditor needs one
- Large crawls depend on the RAM and disk of your own machine
- Log file analysis is a separate product
Rank 2 · Runner-up
Sitebulb
A website auditing tool available as desktop software for Windows and Mac or as a browser-based cloud crawler, with prioritized Hints for each issue.
sitebulb.com8.8
out of 10
Best for: Consultants and agencies who want audits that explain and rank issues for clients and developers.
Sitebulb is built for auditors who need to hand findings to someone else. Every audit is scored against more than 300 Hints on the Pro plan, and each one explains what the issue is and how urgent it is, which saves writing the same explanations for clients and developers. Pro crawls up to 500,000 URLs per audit by default on a normal work computer, and the limit can be raised to 2 million. It adds audit comparisons, scheduled audits, customized PDF reports and JavaScript crawling at no extra cost, plus reports on performance, structured data, hreflang, accessibility and AMP that Lite does not include. Lite stops at 10,000 URLs, so it fits occasional audits of small sites. Sitebulb Cloud moves crawling to the browser for teams of two or more, with automated recurring crawls and no project limits, and an MCP server connects audits to AI assistants. A 14 day trial is available; the USD price did not render on the page we fetched.
Standout feature
More than 300 Hints explain and prioritize each issue in plain language.
Use cases
SEO consultants
Deliver a prioritized technical audit to a client
Outcome: A branded PDF report with ranked issues
Agencies
Schedule monthly audits across client sites
Outcome: Audit comparisons that show what changed
Ecommerce SEOs
Crawl a JavaScript storefront with rendering
Outcome: Rendering and indexability issues by template
Key features
- 300+ prioritized Hints on the Pro plan
- JavaScript crawling at no extra cost
- Audit comparisons and scheduled audits
- Customized PDF reports for clients
- Google Analytics, Search Console and Sheets integration
Pros
- Issues come with plain explanations and priority
- Pro crawls 500,000 URLs per audit by default, up to 2 million
- Cloud version for shared crawls without a local machine
Cons
- Lite is capped at 10,000 URLs and misses several reports
- Desktop crawl size still depends on your computer
- USD prices did not load in a form we could quote
Rank 3 · Also great
JetOctopus
A cloud crawler and log analyzer that combines crawl data, server logs, Search Console and GA4 for large sites.
jetoctopus.com8.3
out of 10
Best for: In-house teams on large sites that want crawl budget and bot behavior data in one place.
JetOctopus is a cloud platform for sites where a desktop crawl is no longer practical. The Growth plan for in-house teams includes 500,000 crawled URLs and 2 million log lines a month, with 3 Search Console and 3 GA4 properties, for $349 a month billed annually or $459 billed quarterly. Every plan has unlimited projects and seats, JavaScript rendering, crawl-to-crawl comparison, segmentation and crawl budget visualization, so you can see which sections Googlebot and AI bots request and which they ignore. Alerts cover indexability, Core Web Vitals and Googlebot activity, and the platform adds a cannibalization tool, position tracking and an AI internal linking feature. Agencies get a separate plan with 20 Search Console and 20 GA4 properties on the entry tier. The main drawback is cost: the entry plan costs more than a year of Screaming Frog, and the pricing page shows only annual and quarterly billing.
Standout feature
Crawl, log, Search Console and GA4 data sit together with unlimited seats.
Use cases
Ecommerce SEO teams
Compare crawled pages with Googlebot hits from logs
Outcome: A list of product pages bots never visit
Publishers
Get alerts when indexability or Core Web Vitals change
Outcome: Faster response to template regressions
Agencies
Manage many client sites without paying per seat
Outcome: One workspace for every client
Key features
- 500K crawled URLs and 2M log lines a month on Growth
- JavaScript rendering crawl mode and crawl budget visualization
- Search Console and GA4 integrations
- Alerts on indexability, Core Web Vitals and Googlebot
- Unlimited projects and seats on every plan
Pros
- Crawls and log analysis in one subscription
- No per-seat fees, so whole teams can log in
- MCP and API access for custom analysis
Cons
- Entry price is far above desktop crawlers
- Billing is annual or quarterly, with no monthly option shown
- Growth connects only 3 Search Console properties
Rank 4
Lumar
An enterprise website optimization platform, formerly Deepcrawl, with a cloud crawler, monitoring, QA tests and accessibility reports.
lumar.io8.1
out of 10
Best for: Enterprise SEO, engineering and accessibility teams that need fast crawls and automated QA.
Lumar, the platform formerly called Deepcrawl, is built around a serverless crawler that the company says reaches up to 450 URLs per second for non-rendered pages and 350 per second for rendered content, as fast as your own infrastructure allows. The platform is split into modules: Analyze holds more than 350 built-in reports, Monitor covers ongoing website monitoring, and Protect runs automated QA tests so regressions can be caught before a release. Beyond technical SEO, it reports on site speed and accessibility metrics, and custom extractions let teams build their own metrics from page HTML. A crawl safeguard pauses a crawl and notifies you when the failure rate passes a threshold you set, which protects fragile servers. The downside for smaller buyers is that there is no public price; Lumar builds a package from the modules you need after you fill in a form, so budget conversations start with sales.
Standout feature
Protect runs automated SEO QA tests so problems are caught before release.
Use cases
Enterprise SEO teams
Crawl millions of pages quickly after a site change
Outcome: Fresh crawl data within hours instead of days
Engineering teams
Run automated SEO QA tests before deployment
Outcome: Releases blocked when key tags break
Accessibility teams
Audit pages against accessibility checks during crawls
Outcome: A list of pages with accessibility issues
Key features
- Crawl speeds up to 450 URLs per second, 350 rendered
- 350+ built-in reports in Analyze
- Automated QA tests in Protect
- Custom metrics from custom extractions
- Crawl safeguard that pauses on failure rate thresholds
Pros
- Very fast serverless crawling for large sites
- Covers technical SEO, site speed and accessibility metrics
- QA tests catch issues before release
Cons
- No public price; quotes come through a form
- Platform scope is more than small teams need
- Packaging varies by the modules you choose
Rank 5
Botify
An enterprise search platform whose SiteCrawler renders pages like search engines and AI bots and reports on 1,000+ technical indicators.
botify.com8.0
out of 10
Best for: Large ecommerce and enterprise sites that want crawling tied to bot analytics and automation.
Botify sells technical SEO as part of a larger enterprise platform, and SiteCrawler is the piece that maps a site. Botify says it uses the same rendering engine as Googlebot, so JavaScript-heavy pages are crawled the way search engines and AI bots see them, and that it can explore millions of pages with no crawl budget limits. Reports cover more than 1,000 technical indicators, from crawl depth and internal linking to load times, status codes and structured data, and the tool highlights the fixes most likely to affect visibility. Around the crawler, Botify adds website and keyword analytics, AI agent and bot analytics, proactive alerts and automation for indexation, internal linking and content deployment, plus an MCP server. That breadth is the reason to buy it and the reason it is a poor fit for small teams: access starts with a demo, there is no public price, and much of the value comes from modules beyond the crawler itself.
Standout feature
SiteCrawler reports on 1,000+ technical indicators across millions of pages.
Use cases
Enterprise ecommerce teams
Render millions of product and category pages
Outcome: A view of content bots cannot see
Technical SEO leads
Prioritize a backlog of hundreds of technical fixes
Outcome: A short list ranked by likely visibility impact
Search managers
Track how AI bots and search engines crawl the site
Outcome: Bot activity reports alongside crawl data
Key features
- SiteCrawler uses the same rendering engine as Googlebot
- Reports across 1,000+ technical indicators
- No crawl budget limits for millions of pages
- AI agent and bot analytics
- Automation for indexation, internal linking and deployment
Pros
- Crawl data sits next to bot analytics and search analytics
- Built for sites with millions of URLs
- Prioritizes fixes by likely impact on visibility
Cons
- Demo-only sales with no public price
- Far more platform than a single auditor needs
- Best value depends on using the automation modules
Rank 6
Semrush Site Audit
The site audit tool inside the Semrush SEO suite, with health scores, severity-ranked issues and AI crawler access checks.
semrush.com7.9
out of 10
Best for: Marketing teams that want a scheduled site audit inside the SEO suite they already use.
Semrush Site Audit is the easiest way to get a regular technical check if your team already lives in Semrush. Each audit produces a site health score, lists issues ranked by severity with a tooltip on how to fix each one, and groups problems into thematic reports so you can see which area of the site is weakest. It also checks whether pages block AI crawlers, naming ChatGPT-User, OAI-SearchBot, Googlebot, Google-Extended, Perplexity-User, PerplexityBot, Claude-User and Claude-SearchBot. Audits can refresh daily, weekly or monthly with automated email reports and white-label exports, and issues can go straight to Trello. Access comes with the SEO plan at $139 a month or $117.33 a month billed annually, which also covers keyword research and position tracking; a free plan gives 10 reports a day. Semrush points teams that need JavaScript rendering and millions of pages to a separate Enterprise Site Intelligence product, and you get less control over raw crawl data than with a dedicated crawler.
Standout feature
Site Audit checks access for eight named search and AI crawlers.
Use cases
Marketing managers
Track site health weekly without technical training
Outcome: A single health score and a ranked fix list
Content teams
Check that AI crawlers can reach important pages
Outcome: A list of pages that block AI bots
Agencies
Send scheduled audit reports to clients
Outcome: White-label exports on a set schedule
Key features
- Site health score with issues ranked by severity
- Thematic reports that group issues by focus area
- AI crawler accessibility checks for named bots
- Daily, weekly or monthly audits with email reports
- Trello integration and CSV export for dev handoff
Pros
- Easy for non-specialists, with fix tips on each issue
- Comes with keyword, backlink and rank tracking tools
- Free plan and a seven-day trial
Cons
- Expensive if you only need a crawler
- Less raw data control than desktop crawlers
- JavaScript rendering at millions-of-pages scale is sold as a separate enterprise product
Rank 7
Oncrawl
A cloud technical SEO platform with a scalable crawler, a log analyzer and data from GA4 and Search Console.
oncrawl.com7.8
out of 10
Best for: Technical SEOs on large sites who want crawl and log data they can segment and export.
Oncrawl is a cloud crawler for technical SEOs who want to slice data rather than read a fixed report. It crawls a site's structure, content, performance and internal linking with hundreds of standard metrics, and Oncrawl says it handles millions of URLs without artificial limits on speed, depth or site size. JavaScript rendering shows content the way search engines and AI systems see it, alongside Core Web Vitals. Teams can keep several crawl configurations, such as audits, monitoring or indexability checks, each with its own scope, schedule and notifications. Custom extraction pulls any on-page data point, and crawl data can be joined with GA4 and Search Console so you can focus on the most viewed or highest converting sections. Oncrawl also offers a Log Analyzer that adds real bot activity. Crawl results can be compared over time with alerts on critical changes. Pricing is not published; you start by booking a demo.
Standout feature
Multiple crawl configurations per project let one site run audits, monitoring and indexability checks separately.
Use cases
Marketplace SEOs
Join crawl data with bot hits from server logs
Outcome: Sections that bots crawl too little or too much
Technical SEO consultants
Run separate audit and monitoring crawls per client
Outcome: Scheduled crawls with alerts on regressions
Analytics teams
Combine crawl metrics with GA4 conversions
Outcome: Fixes focused on the highest converting sections
Key features
- Crawls millions of URLs without limits on speed, depth or size
- JavaScript rendering and Core Web Vitals
- Custom extraction for any on-page data point
- GA4 and Google Search Console data in crawl reports
- Crawl comparison over time with alerts
Pros
- Separate crawl configurations for audits, monitoring and indexability checks
- Log Analyzer adds real bot activity to crawl data
- Crawl data can focus on the most viewed or highest converting sections
Cons
- No public price; access starts with a demo
- Built for large sites, so more than small sites need
- Log analysis is a separate capability to scope with sales
Rank 8
Ahrefs Site Audit
The cloud site audit tool in the Ahrefs suite, checking 170+ technical and on-page issues with JavaScript execution.
ahrefs.com7.7
out of 10
Best for: Site owners and SEOs who already use Ahrefs and want audits next to backlink and keyword data.
Ahrefs Site Audit crawls a site in the cloud, flags more than 170 technical and on-page issues, explains how to fix each one and rolls the results into a health score. Issues are split into errors, warnings and notices, and the categories cover Core Web Vitals, indexability, redirects, hreflang, structured data, JavaScript, CSS and sitemaps. For deeper work, Page explorer and Link explorer expose more than 250 data points per page, and you can search raw HTML, rendered HTML and page text after a crawl without setting up a custom search first. Ahrefs says crawls run at up to 170k URLs a minute and execute JavaScript. Site owners can get limited Site Audit access through Ahrefs Free, while paid access starts with Lite at $129 a month and 100,000 crawl credits, rising to 500,000 on Standard at $249. The limits are the trade-off: crawl credits run out quickly on large sites, and there is no log file analysis.
Standout feature
Search raw and rendered HTML across a finished crawl without configuring it in advance.
Use cases
Site owners
Audit a verified site with Ahrefs Free
Outcome: A health score and fix list at no cost
SEO consultants
Search rendered HTML across a crawl for a code snippet
Outcome: Every page where a tag is missing or wrong
Content teams
Use internal linking suggestions after an audit
Outcome: New internal links to weak pages
Key features
- Checks for 170+ technical and on-page SEO issues
- Executes JavaScript during crawls
- Page explorer and Link explorer with 250+ data points per page
- Search of raw HTML, rendered HTML and page text after a crawl
- Structured data checks against 190+ validation requirements
Pros
- Free limited access for verified site owners
- Fast cloud crawls of up to 170k URLs a minute
- Internal linking suggestions with keyword context
Cons
- Lite includes 100,000 crawl credits
- Paid access is bundled with the full suite at $129 a month
- No server log analysis
Rank 9
Netpeak Spider
A desktop SEO crawler for Windows and macOS that finds 100+ issues, renders JavaScript and calculates internal PageRank.
netpeaksoftware.com7.6
out of 10
Best for: Freelancers and small agencies who want a low-cost desktop crawler with white-label reports.
Netpeak Spider is a desktop crawler for Windows and macOS that covers most of what a routine technical audit needs at the lowest paid price on this list, $20 a month. It detects more than 100 issues, from broken links and duplicate pages to faulty meta tags, sorts them by severity and explains how to fix each one. JavaScript pages are rendered with a recent Chromium version, and a built-in internal PageRank calculator shows how link equity flows through the site. You can generate and validate XML, HTML and image sitemaps, crawl several domains into one table, and scrape custom data with up to 15 conditions using contains, regex, XPath or CSS. Reports export to PDF, including white-label versions with your logo, or straight to Google Sheets and Drive, and Google Analytics and Search Console data can be pulled into the crawl. The free trial lasts only 3 days, and as with any desktop tool, very large crawls depend on your machine.
Standout feature
The internal PageRank calculator shows which pages receive or waste link equity.
Use cases
Freelance SEOs
Send a branded audit to a prospect
Outcome: A white-label PDF report for pre-sales
Small agencies
Check internal link equity across a client site
Outcome: Pages that get little or no internal PageRank
Site owners
Generate and validate XML sitemaps after a crawl
Outcome: A clean sitemap ready to submit
Key features
- 100+ issues with severity prioritization
- JavaScript rendering with Chromium
- Internal PageRank calculator
- White-label PDF audit reports
- Built-in scraper with up to 15 extraction conditions
Pros
- Lowest paid entry price on this list
- Runs on both Windows and macOS
- Google Analytics, Search Console and Sheets integrations
Cons
- Trial lasts only 3 days
- Crawl size depends on your own hardware
- No server log analysis
Rank 10
Moz Pro Site Crawl
The site crawl in Moz Pro campaigns that runs weekly, tracks new and recurring issues and explains how to fix them.
moz.com7.4
out of 10
Best for: Small businesses that want automatic weekly crawls bundled with rank tracking and keyword tools.
Moz Pro's Site Crawl is the lightest option here, meant for teams that want technical issues surfaced automatically rather than investigated in depth. Each Moz Pro campaign crawls the site weekly and alerts you to new and critical issues, such as broken redirects and missing title tags, so problems are caught before they cost traffic. Charts break issues down by category and show new versus total issues over time, and each issue comes with an explanation of its likely SEO impact and how to fix it. You can ignore issues, mark them fixed and recrawl right away to check your work. The Standard plan costs $99 a month, or $79 a month billed yearly, and includes 3 tracked sites and 400,000 pages crawled per month, alongside rank tracking and keyword research. The Site Crawl page does not document JavaScript rendering, custom extraction or log analysis, so technical specialists will use it as a monitor rather than an audit tool.
Standout feature
Weekly automatic crawls with alerts on new critical issues.
Use cases
Small business marketers
Get alerted when new critical site issues appear
Outcome: Weekly emails instead of manual audits
In-house generalists
Mark issues fixed and recrawl to confirm
Outcome: A cleaner issue list after each release
Consultants
Show clients issue trends over time
Outcome: Charts of new and total issues
Key features
- Automatic weekly crawls with alerts on new critical issues
- Tracking of new and recurring issues over time
- Explanations of each issue's SEO impact and fix
- Ignore, mark as fixed and instant recrawl
- 400K pages crawled per month on Standard
Pros
- Hands-off weekly monitoring for small sites
- Clear issue explanations for non-specialists
- Bundled with keyword research and rank tracking
Cons
- Fewer advanced options than dedicated crawlers
- Standard covers only 3 tracked sites
- No JavaScript rendering or log analysis is documented on the Site Crawl page
Frequently asked questions
+What is the best technical SEO crawler in 2026?
Screaming Frog SEO Spider scores highest for hands-on technical SEOs, with JavaScript rendering, custom extraction and crawl comparison for $279 per user per year and a free version up to 500 URLs. Sitebulb is a close second for prioritized, explained audits, and JetOctopus leads the cloud options from $349 a month billed annually.
+Is there a free technical SEO crawler?
Screaming Frog's free version crawls up to 500 URLs. Ahrefs Free gives website owners limited Site Audit access, and Semrush's free plan includes 10 reports a day. Sitebulb and Netpeak Spider offer trials of 14 days and 3 days.
+Screaming Frog or Sitebulb?
Choose Screaming Frog if you want maximum control over crawl settings and raw data for a low yearly fee. Choose Sitebulb if you want each issue explained and prioritized, with audit comparisons, scheduled audits and customized PDF reports for clients on the Pro plan.
+Do I need a cloud crawler or a desktop crawler?
A desktop crawler is enough for most sites up to a few hundred thousand URLs, since Sitebulb Pro sets 500,000 URLs as its default limit. Cloud crawlers such as JetOctopus, Lumar, Botify and Oncrawl suit sites with millions of URLs, shared team access and log file analysis.
+Which crawlers analyze server log files?
JetOctopus includes log lines in every plan, starting with 2 million a month on Growth, and Oncrawl sells a Log Analyzer alongside its crawler. Botify adds AI agent and bot analytics, and Screaming Frog sells a separate Log File Analyser.
+Are Semrush and Ahrefs site audits enough for technical SEO?
They work well as recurring health checks, with severity-ranked issues and scheduled crawls, and Ahrefs lets you search rendered HTML after a crawl. For large or JavaScript-heavy sites, a dedicated crawler gives more control over configuration, extraction and comparisons.
About this list
Updated November 9, 2026 by the Mojolin research desk. Mojolin is self-funded
Questions or corrections: editorial@mojolin.com
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