Alternatives / Semrush
Looking for an open source Semrush alternative? We found one open source SEO platform: OpenSEO, an MIT-licensed tool for keyword research, backlink analysis, competitor insights, and rank tracking that you can self-host and pay for by usage.
Written by Maxime DERAME
Last updated:
| Alternative | Best for | License |
|---|---|---|
| OpenSEO | Self-hosted SEO with pay-as-you-go data | MIT |
We looked for open-source tools that cover Semrush's core: keyword research, backlink analysis, competitor monitoring, and rank tracking. We verified the project's license, recent activity, stars, and self-hosting in its repository. Only one project met these criteria. Semrush's value lies largely in its proprietary data index, which no open-source tool replicates, so we explain where OpenSEO gets its data. See our methodology for the full criteria.
OpenSEO is a self-hosted application, but SEO data such as search volumes, backlinks, and rankings comes from the DataForSEO API, which you pay for with your own API key on a pay-as-you-go basis. Semrush's own keyword and backlink databases are proprietary, so expect different coverage and numbers.
OpenSEO offers keyword research and organization, backlink analysis, competitor insights, rank tracking, and AI visibility checks, and it positions itself as an all-in-one SEO tool for you and your AI agent. It does not advertise Semrush's wider suite, such as social media, advertising research, or content marketing tools.
OpenSEO is licensed under MIT and can be self-hosted with Docker or on Cloudflare, so you control the infrastructure and data. A paid hosted option is also available for people who do not want to run it themselves.
OpenSEO's repository was updated within days of this update and has grown quickly to over 22,000 stars, but it is a young project with a short history.
Semrush is a proprietary SEO suite sold by monthly subscription, with tiered limits on projects, keywords, and reports, and all data held on its platform. An open-source alternative lets you self-host the interface, own your keyword and ranking data, avoid a platform markup, and pay only for the data you use, at the cost of relying on a third-party data provider and a younger feature set.
| Alternative | Type | License | Self-hosted | Data source |
|---|---|---|---|---|
| OpenSEO | SEO platform | MIT | Yes (Docker, Cloudflare) | DataForSEO API, pay as you go |
Want to own your SEO tool and data
OpenSEO is MIT-licensed and can be self-hosted with Docker or on Cloudflare, so keyword and ranking data stays under your control.
Want to avoid a monthly SEO subscription
OpenSEO uses pay-as-you-go data through your own DataForSEO key, with no platform markup.
Want to build custom SEO workflows or use AI agents
Because the code is open, teams can fork it and build custom workflows, and it is designed to work with AI agents.