Open source alternative to Semrush and Ahrefs

Open source alternative to Semrush and Ahrefs

OpenSEO is an SEO tool for the people. If tools like Semrush or Ahrefs are too expensive or bloated, OpenSEO is a pay-as-you-go alternative that you actually control.

All-in-one SEO tool for you and your AI agent.

Connect with any agent like Claude Code, OpenClaw or Hermes. We have pre-built skills, but you can build your own to tailor OpenSEO to your needs.

• Why use OpenSEO?
• Main SEO Workflows
• OpenSEO MCP
• OpenSEO Agent Skills
• Roadmap
• Community
• Pricing / Costs (Free + API costs)
• DataForSEO API Key Setup
• Google Search Console
• Self-hosting
  • Docker Self Hosting
  • Cloudflare Self-Hosting
• Local Development
• Contributing
• SEO API Cost Reference

If you're not interested in self hosting, or just want to support the project, we also have a hosted version:

openseo.so

• Best in class MCP and AI Skills.
• Modern, simple UI.
  • Focused workflows instead of a bloated, complex SEO suite.
• No subscriptions.
  • Bring your own DataForSEO API key and pay only for what you use.
• Fork and vibe code your own custom tool.

• Keyword research
• Rank tracking
• Competitor Insights
• Backlinks
• Site Audits
• AI Visibility

Join Discord to chat: Discord

Follow along for updates:

• Follow on X: https://x.com/bensenescu
• Sign up for the mailing list on our website: openseo.so

OpenSEO exposes an MCP server so AI agents can use your SEO data directly.

Connect Claude Code, OpenClaw, Hermes or any other agent.

• Set up the app
• Click "AI & Agents" in the header
• Follow the instructions to connect to your agent

OpenSEO Agent Skills are reusable workflows for your agent

They guide your agent through SEO tasks and use the OpenSEO MCP so your agent makes better recommendations.

• seo-project-setup
• seo-coach
• keyword-research
• keyword-clustering
• competitive-landscape
• competitor-analysis
• link-prospecting

Read our docs for how to install the skills:

https://openseo.so/docs/skills/setup

Top priorities:

• Improved and Scheduled Site Audits
• Custom Reports for Clients
• Local SEO
• In App AI Agent

Our top priority is always refining the current product and making existing features better based on user feedback.

If something important is missing, please join the Discord or email me at ben@openseo.so and request it.

OpenSEO is totally free to use. It works by using DataForSEO's APIs, which is a paid third-party service unaffiliated with OpenSEO.

There are two separate things:

1. OpenSEO app cost: $0, you host it yourself.
2. DataForSEO API: pay-as-you-go based on usage.

For cost estimates, see DataForSEO API Cost Reference.

OpenSEO uses DataForSEO to fetch SEO data. You need an API key to connect OpenSEO to the service.

1. Go to DataForSEO API Access.
2. Click "Send by email" to get set your credentials.
3. Copy the longer crendentials labelled "Base64" credentials.
4. Set this as DATAFORSEO_API_KEY in your environment file:

• Docker self-hosting: .env
• Cloudflare: Set it in the workers UI
• Local development: .env.local

Search Console is optional and works in self-hosted deployments using your own Google OAuth client. It takes ~10 minutes of one-time setup — see docs/SELF_HOSTING_GOOGLE_SEARCH_CONSOLE.md.

OpenSEO supports two self-hosting paths:

• Docker for personal use and testing (Recommended for local use).
• Cloudflare for internet-facing self-hosting across multiple devices or for your team.

Docker

Docker is recommended for getting started. It's super easy to get up and running once you install Docker.

Cloudflare

If you love OpenSEO and want to use it across multiple devices or with your team, you can host it on Cloudflare which we'll be a SaaS-like experience. Also, this will have automatic database backups and other nice convenience features. It's just a bit more effort to get started if you're unfamiliar with Cloudflare.

Prerequisites:

• Install Docker: https://www.docker.com/products/docker-desktop/

Quickstart:

1. cp .env.example .env
2. Set DATAFORSEO_API_KEY in .env
3. docker compose up -d
4. Open http://localhost:<PORT> (default 3001)

To update to the newest published image, pull first and then restart:

docker compose pull
docker compose up -d

For more info, see docs/SELF_HOSTING_DOCKER.md.

Clicking this button opens a page to deploy OpenSEO in your Cloudflare account. If you do not have an account yet, it will take you to account creation first (OpenSEO works great on the free plan).

Reference these docs while deploying since the Cloudflare UI doesn't indicate what steps you need to take: docs/SELF_HOSTING_CLOUDFLARE.md.

See docs/LOCAL_DEVELOPMENT.md.

Contributions are very welcome.

• Open an issue for bugs, UX friction, or feature requests.
• Open a PR if you want to implement a feature directly.
• Community-driven improvements are prioritized, and high-quality PRs are encouraged.

If you want to contribute but are unsure where to start, open an issue and describe what you want to build.

Use this section to estimate DataForSEO spend per request type. OpenSEO itself remains free; these are API usage costs only.

As of February 26, 2026, DataForSEO’s public docs/pricing pages say:

• New accounts include $1 free credit to test the API.
• The minimum top-up/payment is $50.

That means you can try OpenSEO for free with the starter credit, then decide if/when to top up.

• Track 100 keywords weekly at depth 50: ~$1.20/month
• 100 keyword research requests at the default 150 results: $3.50
• 100 keyword research requests at 500 results each: $7.00
• 100 domain overviews (200 ranked keywords each): $4.01
• 100 backlinks domain searches at current defaults before opening extra tabs: about $6.34
• 100 backlinks page searches at current defaults before opening extra tabs: about $4.30
• 100 fully explored backlinks domain searches: about $10.94
• 100 fully explored backlinks page searches: about $8.61

• DataForSEO SERP API pricing: https://dataforseo.com/apis/serp-api/pricing
• DataForSEO Keywords Data API pricing: https://dataforseo.com/pricing/dataforseo-labs/dataforseo-google-api
• DataForSEO Backlinks pricing: https://dataforseo.com/pricing/backlinks/backlinks
• DataForSEO Lighthouse API docs: https://docs.dataforseo.com/v3/on_page/lighthouse/overview/