kuku

kuku is an open-source, local-first Markdown workspace for macOS designed for people who want their notes to stay portable, private, and useful to AI. It edits ordinary .md files in a local vault, then layers search, graph navigation, AI assistance, Second Brain workflows, and encrypted sync on top.

The app connects notes with [[wikilinks]], backlinks, and 2D/3D graph navigation, turning your vault into a personal wiki. AI features include Agent, Ask, and Inline editing modes with diff-based approval, so proposed changes are always reviewable before they are applied. Decision documents help AI context improve explicitly over time by turning proposals into traceable memory and wiki updates.

Built as a full-stack open-source project, kuku includes the macOS client, web app, Go server, protobuf contracts, Rust AI/indexing crates, and Docker infrastructure. You can use it entirely offline, sign in for managed convenience, or self-host the complete stack yourself.