Second Brain
A free, open-source shared memory that runs in your own Cloudflare account, so Claude, ChatGPT, Cursor and other MCP clients can recall the same projects, preferences and decisions.
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About Second Brain
Second Brain is listed in our memory & RAG category and is aimed at builders. A free, open-source shared memory that runs in your own Cloudflare account, so Claude, ChatGPT, Cursor and other MCP clients can recall the same projects, preferences and decisions. Pricing, as the maker states it: Open source. Maturity: Active. We last checked the official link on 2026-10-20.
Second Brain at a glance
- Category: Memory & RAG
- Built for: Developers and teams building with AI agents
- Pricing: Open source (as the maker states it)
- GitHub: rahilp/second-brain-cloudflare · 816 stars (as of Oct 21, 2026)
- Latest release: Second Brain Desktop 4.0.1, Oct 14, 2026
- Last commit: Oct 14, 2026
- Official site: thesecondbrain.dev
- Listed on AgentScout: Oct 20, 2026
Second Brain FAQ
What is Second Brain?
A free, open-source shared memory that runs in your own Cloudflare account, so Claude, ChatGPT, Cursor and other MCP clients can recall the same projects, preferences and decisions.
How much does Second Brain cost?
Second Brain's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Where can I find Second Brain's source code?
On GitHub at rahilp/second-brain-cloudflare, which had 816 stars as of Oct 21, 2026. The latest release is Second Brain Desktop 4.0.1 (Oct 14, 2026).
What are alternatives to Second Brain?
Similar tools include memU, ai-memory, LongMemory, Basic Memory, Mnemosyne and OpenLore.
Facts from our link-checked listing, the GitHub repository and the official site. See something wrong? Suggest an edit.
Second Brain ratings and reviews
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Second Brain alternatives
Other memory & RAG tools in our directory. See all memory & RAG tools →
memU
Lightweight memory system that gives Codex, Claude Code, Cursor and other agents a shared memory across sessions and devices and distills reusable skills.
ai-memory
Fabio Akita's open-source long-term memory layer for coding agents: one Rust binary that keeps plain-markdown project memory and typed handoffs shared across 20+ harnesses such as Claude Code, Codex, Cursor and Gemini CLI, so you can switch agents, machines or teammates without re-explaining the project.
LongMemory
Local-first memory engine for agents that keeps durable, time-aware memories in SQLite and serves them to Claude, Copilot, Codex and others over MCP, CLI or HTTP.
Basic Memory
Persistent memory for Claude, Codex and Cursor stored as local Markdown knowledge, available open source or as a hosted cloud workspace.
Mnemosyne
Zero-cloud, SQLite-backed memory layer for Hermes, Claude Code, Cursor, Codex and custom agents with a single Python dependency.
OpenLore
A self-hosted knowledge repository for AI agents written in Go, where agents and teams share docs, notes and findings over SSH and MCP with scoped access.
Related lists
🏆 Ranked in: MCP servers that work with Cursor · MCP servers that work with Claude Code
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