OpenKnowledge

OpenKnowledge is a local-first, open-source markdown editor and LLM wiki built by Inkeep, designed to serve as a shared knowledge base for both humans and AI agents. It combines a Notion-like WYSIWYG editing experience with native integrations for Claude, Cursor, Codex, and any MCP-compatible agent. The project is licensed under GPL-3.0 and available as a macOS desktop app or a cross-platform CLI/web app.

What It Is

OpenKnowledge sits at the intersection of a personal knowledge manager and an agent-native wiki. It stores everything as plain markdown files on your local machine, giving you full ownership and portability, while exposing built-in MCP tools, agent skills, and agentic search so that AI coding assistants can navigate, edit, and grow your knowledge base autonomously. The editor renders markdown as rich blocks — tables, callouts, accordions, Mermaid diagrams, embeddable HTML, and more — while keeping plain .md files under the hood.

Agent-Native Architecture

The core differentiator is that OpenKnowledge is designed from the ground up for agents to co-author content alongside humans:

• Native MCP server: Plug your knowledge base directly into Claude, Cursor, Codex, or any MCP-compatible harness with no extra configuration.
• Agent skills: Pre-built skills let agents navigate, write, and update documents out of the box.
• Agentic search: Embeddings and hierarchical RAG help agents find the right content across large knowledge bases.
• ok init scaffolding: Running ok init in a project directory automatically wires up Claude Code, Cursor, and Codex integrations.

Editor and Rich Content

The editing surface is described on the homepage as "a Notion-like editor that's just markdown under the hood." Supported block types include callouts, accordions, tabs, Mermaid flowcharts, images with captions, inline video embeds, and embeddable HTML iframes for live app previews and data visualizations. A visual/markdown toggle lets users switch between rendered and raw views. The editor also tracks word count, character count, and estimated token count per document — a detail aimed squarely at LLM-aware workflows.

Deployment and Platform Support

OpenKnowledge runs in two modes:

• macOS desktop app: A native ARM64 DMG download for Apple Silicon Macs.
• Web app / CLI: An npm package (@inkeep/open-knowledge) that serves the same editor as a local web app, supporting Linux, Windows, and Intel Macs. Requires Node.js 24+.

Team sharing and auto-sync are powered by git and GitHub under the hood, enabling one-click sharing of documents or entire workspaces while keeping history and ownership in a standard git repository.

Update: v0.18.0

The GitHub repository shows the latest release as v0.18.0, published on June 25, 2026, with the repository itself created on June 3, 2026. The project has been actively developed since launch, with the last push recorded on June 26, 2026. The repository is written primarily in TypeScript and has accumulated 508 stars and 15 forks since its public debut. Public pull requests are accepted and mirrored into an internal monorepo for review and merge.