Second Brain for AI
Persistent memory for Claude, ChatGPT & Cursor. Free.
Details
- External ID
- 1151393
- Source
- PH
- Company
- —
- Product
- Second Brain for AI
- Website domain
- producthunt.com
- Launched
- May 31, 2026
- Cohort
- —
- Upvotes
- 284
- Upvotes percentile
- 0.6057692307692307
- Tags
- Open Source, Developer Tools, Artificial Intelligence
- Fetched at
- Sept. 7, 2026, 1:22 a.m.
- Updated at
- Sept. 7, 2026, 1:22 a.m.
Description
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.
Enrichment
- Theme
- AI visibility and marketing tools
- Vertical
- Horizontal
- Function
- Agent / copilot
- Audience
- Developer
- AI stance
- AI-native
- Project type
- Commercial product
- Normalized one-liner
- persistent memory system for ai assistants
- Manually corrected
- False
Could you build this?
Yes This is a self-hosted Model Context Protocol (MCP) server that embeds chat history or notes into a local vector database (like Chroma or SQLite-vec) and exposes standard semantic search endpoints to LLM clients.
Competitors
Other products that read as similar to this one — 283 launches clear the similarity bar, closest 8 shown.
Attention rank: #128 of 284 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 206 days after the earliest competitor.
- ContextPool · ph · 2026-04-13 · 179 upvotes · similarity 0.58
- Claude-engram · hn · 2026-02-16 · 6 upvotes · similarity 0.56
- Lumi · ph · 2026-09-24 · 3 upvotes · similarity 0.55
- friday · github · 2026-09-16 · 47 upvotes · similarity 0.55
- Living Memory · ph · 2026-09-30 · 3 upvotes · similarity 0.54
- chat-recall · ph · 2026-09-11 · 95 upvotes · similarity 0.54
- Retain · hn · 2026-01-21 · 45 upvotes · similarity 0.53
- Unibase Memory · ph · 2026-09-18 · 1 upvotes · similarity 0.53
Other launches for this product
Same idea, different domain
Nobody's really built a agent / copilot tool for Agriculture yet.