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.
This is the 3rd launch from Second Brain for AI. View more
Second Brain for Mac and Windows
Launching today
The Second Brain desktop app gets you running in five minutes. No terminal. No git. Just download, set a password, and sign into Cloudflare. Then the real magic starts. Persistent memory across every AI tool you use.
Recall that just got a lot smarter. Surfaces the right memory, not just the newest one. A knowledge graph that builds itself. Your data in your own Cloudflare account, not ours. Mac and Windows. You asked for the app. You asked for better recall. We shipped both.
Free
Launch Team / Built With
Second Brain for AI
We’re live! 🎉
I’ve been up since early this morning watching the comments come in and it already means a lot.
This app exists because of this community. You told me the setup was too hard. You asked for a no-code path. I built it.
Download, set a password, sign into Cloudflare. Five minutes. No terminal. No git. Your Second Brain is running natively on Mac or Windows, connected to every AI tool you use via MCP.
Your memories live in your Cloudflare account. Not mine. I literally cannot access them.
If you try it today, tell me where it breaks, where it confuses you, and what you want next. That feedback is what shapes the next version.
Let’s go.
Second Brain for AI
A lot of people have been asking how memories are stored and whether they sync across devices. This diagram explains it better than words can.
The desktop app is how you install and access Second Brain. Your memories live in your own Cloudflare account, not the app and not our servers. Switch from Claude to ChatGPT to Cursor, your brain is already there. Uninstall the app, your memories are still there.
The app is the door. Cloudflare is the house.