Instead of Open SEO Crawler
Open SEO Crawler alternatives
Open SEO Crawler is a free, MIT-licensed crawler for technical SEO audits, with checks for titles, metadata, headings, canonicals, structured data, redirects, errors, indexability, images, and more. It detects several CMS platforms and applies crawl recommendations, and optional Playwright rendering can reveal content missing from raw HTML. It runs locally on Linux, macOS, and Windows, with self-hosted and web platforms also supported; its page cap can be set to unlimited.
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Ahrefs
by AhrefsFree plan APIWebSEO teams needing keyword, rank, and backlink tools — Ahrefs adds keyword research, rank tracking, and backlink analysis alongside site audits and competitor research.
Free plan · paid from $29/mo Visit site - 2
Screaming Frog SEO Spider
by Screaming Frog SEO SpiderFree plan APILinuxMac+2Crawling sites for a wide range of SEO issues — Screaming Frog SEO Spider audits for over 300 SEO issues and offers API access, while Open SEO Crawler specifies particular checks and local operation.
Free plan Visit site - 3
Semrush
by SemrushFree plan APISEO work combining audits, keywords, and rankings — Semrush combines site audits with keyword research, rank tracking, backlink analysis, competitor research, and API access.
Free plan · 7-day trial Visit site - 4
Google Search Console
Free plan APIWebMonitoring a site's presence in Google Search — Google Search Console focuses on Google's crawling, indexing, search traffic, and issue alerts rather than general-purpose crawling.
Free plan Visit site - 5
Bing Webmaster Tools
Free plan APIWebChecking visibility and crawling in Bing search — Bing Webmaster Tools reports Bing search performance and lets you inspect URLs as Bingbot sees them.
Free plan Visit site - 6
Rank Math SEO
Free plan Open source APISelf-hostedWebWordPress sites needing SEO controls and analysis — Rank Math adds WordPress content suggestions, indexability controls, structured data, performance tracking, and 30 SEO tests.
Free plan Visit site - 7
Yoast SEO
by Yoast SEOFree plan Open source APISelf-hostedWebWordPress sites needing SEO and readability tools — Yoast SEO provides real-time SEO and readability analysis, automatic XML sitemaps, structured data, indexing controls, and a REST API.
Free plan · paid from $118.80/yr Visit site - 8
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Linkody
Free plan APIWeb - 11
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Topvisor
Free plan APIExtensionWeb - 13
CrawlSEO
Free plan APISelf-hostedWeb - 14
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KrawlOps
Free plan AndroidExtensioniPhone+1 - 16
SiteOne Crawler
Free plan APILinuxMac+2 - 17
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SerpBear
Free plan AndroidAPIiPhone+2 - 20
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Outerank
Free plan API - 23
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CrawlZilla
Free plan APIWeb - 28
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PageOptimizer Pro
Free plan APIExtensionWeb - 30
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OxideSEO
Free plan LinuxMacWindows
Its focus is crawling rather than a broad SEO toolkit, and it requires installation and self-hosting. If you need keyword research, rank tracking, or backlink analysis, compare alternatives that include those functions. Search-engine webmaster tools can help diagnose indexing and performance in a specific search engine, while WordPress plugins add content and site-management features. Consider whether you need a general crawler, search visibility reports, WordPress-specific controls, or a combination—and whether a free plan, paid plan, or supported platform fits your work.