ITG NowHome › Free alternatives › Free alternatives to Semrush
Free alternatives to Semrush (open source, 2026)
Free, open-source tools from GitHub that our guides call a Semrush alternative, each with a plain-English setup guide.
- 1 free pick
- Updated 16 Oct 2026
1 free alternative to Semrush
Our guides call this a free Semrush alternative. Each card opens the full guide with setup steps.
At a glance
From each guide, checked against the official README on the date shown.
| Tool | Runs on | License | GitHub stars (checked) |
|---|---|---|---|
| OpenSEO | Web (self-hosted via Docker or Cloudflare) | MIT | 23.7K (16 Oct 2026) |
FAQ
What is a free alternative to Semrush?
OpenSEO is a free Semrush alternative for keyword research, rank tracking and site audits. It's open source, and you pay only for the search data you use.
Is OpenSEO really free?
OpenSEO is open source under the MIT license, so the code is free to use. Our guide checked this against the official README.
What does OpenSEO run on?
OpenSEO: Web (self-hosted via Docker or Cloudflare).