OpenKnowledge

OpenKnowledge is a beautiful markdown editor with integrations with Claude, Codex, and other harnesses. For knowledge bases, LLM wikis, specs, and notes. Private, local, and free.

website • desktop app • web UI + cli • 𝕏 • discord

<img src="assets/hero.webp" alt="OpenKnowledge editor with an AI agent drafting a launch recap" width="100%" style="border-radius: 10px" />

Highlights:

• Full true WYSIWYG so that editing markdown files feels like editing a Google Doc or Notion page.
• Desktop app (macOS, Windows, Linux) and web UI with file navigator, search, tabs, graph wiki link viewer, and more.
• Integrated side-by-side AI-editing with Claude, Codex, OpenCode, Pi and others. Can be used with any harness/agent via MCP/CLI.
• Out-of-the-box MCP, skills, and agentic search for LLM Wikis, second brains, and knowledge graphs.
• No-code Team sharing and Auto-sync powered by git/GitHub under the hood.
• Embeddable HTML and rich components for writing engineering specs and visualized reports.

Usage

Use OpenKnowledge by opening any existing folder on your computer that contains markdown or mdx files. The app can be used with existing codebases, wikis, Obsidian vaults, etc.

Think of it as Notion meets VS Code.

You can use it simply as a rich, WYSIWYG markdown editor to start. For existing files or plain notes/docs.

To get more complex, you can use the starter packs to create LLM Wikis, second brains, or more structured knowledge bases.

Either way, the app will walk you through installing the MCP and skills for agent harnesses detected on your computer. These are designed to help agents with enriched search + authoring of documents.

Git/GitHub based sync and sharing can optionally be enabled.

Docs for general usage: .