Screaming Frog SEO Spider
The Screaming Frog SEO Spider is a website crawler that helps you improve onsite SEO, by extracting data & auditing for common SEO issues. Download & crawl 500 URLs for free, or buy a license to remove the limit & access advanced features. The SEO Spider is a powerful and flexible site crawler, able to crawl both small and very large websites efficiently while allowing you to analyze the results in real-time. It gathers key onsite data to allow SEOs to make informed decisions. Crawl a website instantly and find broken links (404s) and server errors. Bulk export the errors and source URLs to fix, or send to a developer. Find temporary and permanent redirects, identify redirect chains and loops, or upload a list of URLs to audit in a site migration. Analyze page titles and meta descriptions during a crawl and identify those that are too long, short, missing, or duplicated across your site.
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Meelu
Meelu is a marketing software project with free browser-based SEO tools and a desktop AI marketing agent in development. Available tools include a technical site audit that crawls up to 100 pages and checks crawlability, indexing, metadata, structured data, internal links and AI-crawler access; a broken-link checker; keyword clustering; readability and text-similarity checkers; and an AI-content detector. The tools provide reports or downloadable CSV results, and the public audit tools require no account. The planned desktop agent is intended for marketers, SEO specialists and website-owning teams. The vendor describes its future functions as local site crawling and audits, marketing-data analysis, outreach drafting and social listening, with user approval before external actions. The site currently labels the desktop agent as in development, so these planned capabilities should not be treated as a finished product.
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Seobility
Seobility checks your complete website, by crawling all linked pages. All found pages with errors, problems with the on-page optimization or problems regarding the page content like duplicate content are collected and displayed in each check section. Of course, you can also analyze all problems of a single page in our page browser. For a sustainable and continuous review of your website, each project is constantly crawled and analyzed by our crawlers to track the progress of your optimization. You will also be notified by our monitoring service with the status of your website via e-mail, if server errors and major problems occur. Seobility not only provides a detailed SEO audit but also gives tips and instructions on how to fix the problems found on your website. By fixing these issues, you make sure that Google can access all of your relevant content and understand what it’s about in order to match it with suitable search queries.
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CrawlRaven
CrawlRaven is a web-based SEO audit platform built for agencies, consultants/freelancers, and small/medium teams who need depth without the noise. It crawls up to 50,000 pages per audit, runs 200+ technical checks, and surfaces a prioritized fix list ranked by ranking impact - so you always know what to fix first, not just what's broken.
Key Features
- Deep Site Crawl Engine: Crawls up to 50,000 pages per audit with 200+ checks across technical SEO, on-page, Core Web Vitals, structured data, link health, and security.
- Prioritized Fix List: Every issue ranked by actual ranking impact -- not just severity. Always know what to fix first for maximum SEO gain.
- White-Label PDF Reports: Branded reports with your agency logo, colors, and custom domain. Professional deliverables clients actually read.
- Core Web Vitals Monitoring: Page-level LCP, INP, and CLS tracking with waterfall charts and actionable recommendations to pass Google's thresholds.
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