OpenKnowledge: Local AI Markdown Editing with Claude & Codex

OpenKnowledge is a new, free, open-source markdown editor that allows AI coding agents to read and rewrite local markdown files. This tool integrates directly with AI models like Claude Code and OpenAI Codex. What's unique is that it lets these AI agents work with your files without sending any data to a cloud server. It uses a special technology called a dual-observer CRDT to keep your rich-text document and its raw markdown in sync. This means an AI can write directly to a markdown file, and you see the changes immediately in the editor. A Conflict-free Replicated Data Type, or CRDT, ensures that multiple edits, even from an AI and a user simultaneously, can merge automatically and always result in the same outcome. This happens without needing a central server. The developers solved a challenge by using a dual-observer architecture. This keeps both the rich-text editor and the markdown source perfectly synchronized. This matters because it offers a new way to use AI for coding and editing, keeping your data private and local.