OpenSEO - an open-source SEO suite billed by usage, not by subscription

The SEO stack is usually the priciest line in an early-stage budget, and most of that goes to seats you barely use. This covers the same core research and charges for what you actually run.

- keyword research, competitor research, backlinks, rank tracking and technical site audits
- AI visibility monitoring with prompt comparison across models, which the incumbents still charge extra for
- 100% open source and self-hostable; connects over MCP, so a coding agent pulls the data directly

Strongest if you already work through a coding agent, since SEO decisions then come from live data instead of guesses; check the usage rates against your volume before you switch off a flat plan.

https://openseo.so/

📎 Read also:
→ The non-branded query that silences founders
→ Repaint - redesign without losing SEO
→ HasData - SERP parsing eats 20-50% of dev time