Second Brain for AI
github.com
Persistent memory for Claude, ChatGPT & Cursor. Free.
Every AI conversation starts from zero. Your projects, decisions, and preferences disappear as soon as you close the chat. Second Brain fixes that. It is a self-hosted memory layer that works with Claude, ChatGPT, Cursor, and any MCP client. You can store context once and recall it by meaning instead of keywords. It includes duplicate detection, semantic search, and a web UI. Built on Cloudflare, it offers a free tier and your data remains yours. MIT licensed.
Specs
| Type | Tool |
| Section | Knowledge base software |
| Pricing | open source |
| Systems | Web |
| Site language | en |
| GitHub | rahilp/second-brain-cloudflare |
| Rating | 4.00 (2 reviews) |
| Launched | 2026-05-19 |