Free, open source
Memory system for you and your AI agents
Your second brain that AI agents can navigate.
Plain markdown. Any editor. Local-first.
Hierarchical Knowledge Graph
Structure notes with inclusion links. Same note in multiple contexts without duplication.
External Memory for AI
CLI tools let AI agents retrieve and update your knowledge with full context.
Local-First
Your data stays on your machine as a directory with Markdown files. No cloud required.
Editor Integration
Search, navigate, refactor via LSP. VS Code, Neovim, Zed, Helix.
IDE Features for Notes
Go-to-definition, rename, find references. Developer-grade navigation.
Works with Any AI
No built-in AI. Designed to work with Claude, Codex, Gemini, and others.
Polyhierarchy
Same note can appear under multiple parents. Context inheritance across the graph.
Built for Speed
Rust-powered performance. Navigate thousands of notes instantly.