LibreCrawl
Leading#5 in Open sourcemedium confidence
A desktop SEO crawler (~787 stars) positioned as a free Screaming Frog / DeepCrawl alternative — JS rendering, link mapping, Core Web Vitals via PageSpeed, and CSV/JSON/XML export.Our read
Why it ranks #5
Roughly 787 GitHub stars and 166 forks show solid early interest in a free desktop crawler, with active 2026 development but a smaller community than mature SEO tools.Here is the catch
newer project with limited long-term track record
desktop resources constrain very large crawls
community support is smaller than commercial crawler ecosystems
Does this well
desktop alternative to subscription crawlers
supports rendered pages and useful exports
active and extensible open-source codebase
Pricing
Checked by hand on 2026-07-23. Prices in this category change often — if this looks wrong, it probably is.
Key features
desktop site crawlingJavaScript renderinglink and technical SEO analysisCore Web Vitals and multi-format export
Sources we read
Quick facts
More in this area
The rest of the Open source column.- 1SerpBearThe go-to self-hosted keyword rank tracker (~2.0k stars) — unlimited domains, Google Search Console integration and email alerts. Highest-star standalone OSS app in this set.
- 2advertoolsThe practitioner reference library for scriptable technical SEO (~1.4k stars): a Python/pandas toolkit with a Scrapy crawler, robots.txt and sitemap parsing, SERP and log analysis. The most mature, respected pro-grade OSS SEO library.
- 3awesome-seo-tools (SerpApi)A vetted directory of SEO tooling (~1.0k stars) across 10 categories, maintained by SerpApi. A starting point for discovery rather than a tool you run — hence medium.
- 4seo-audits-toolkitAn all-in-one self-hosted audit app (~802 stars) by Stan Girard (Quivr author): Lighthouse scoring, security headers, SERP rank, and keyword/image/sitemap extraction.
- 6SEOnautA mature self-hosted technical-SEO auditor (~741 stars, Go + MySQL) with severity-ranked crawl reports (broken links, redirects, meta issues, heading order) and a dashboard.
- 7geo-optimizer-skill (Auriti Labs)An AEO/GEO auditing toolkit (~615 stars) that measures whether ChatGPT, Perplexity, Gemini and AI Overviews cite your site and generates fixes (robots.txt bot rules, llms.txt, JSON-LD). Despite the name it is a CLI/Python/Astro toolkit, not an MCP server.