You searched a paid product
Semrush does 5 jobs: keyword research, rank tracking, backlink analysis, site audit, competitor analysis. Most projects replace one or two of them, so pick the job you actually need.
Open-source alternatives to Semrush that run locally, allow commercial use and need no paid API include Unlighthouse (site audit; MIT). OpenSEO covers all 5 Semrush jobs.
Self-hostable SEO app for keyword research, rank tracking, backlinks, site audits and AI visibility, with an MCP server for AI agents.
Self-hosted SEO site auditor that crawls a website and reports broken links, redirects, meta tag and heading issues by severity.
Self-hosted Google rank tracker with unlimited keywords, email alerts, Search Console data and keyword ideas via Google Ads.
Command-line tool that crawls a whole website and runs Google Lighthouse on every page, with a local UI for the results.
No project meets all of your requirements. The list below shows what you'd need to relax.
We hid them because something is missing, unknown or conflicting. Here's what.
Yes. SerpBear, Unlighthouse and SEOnaut are free to download and run on your own computer without paid API keys. Each covers only part of what Semrush does, so check which job you need.
Yes, with OpenSEO (MIT) and SerpBear (MIT). Check the hardware notes and licence conditions on each page before you start.
Yes, with OpenSEO (MIT) and SerpBear (MIT). Check the hardware notes and licence conditions on each page before you start.
Confirmed: OpenSEO, SEOnaut, SerpBear and Unlighthouse. This is not legal advice; read each licence.
OpenSEO covers every job we list for Semrush.