OpenMarkdown is a feather-light, local-first Markdown editor built for you and your agent. It enables real-time co-editing between human and AI, with a native Rust core for instant startup and full control over your plain .md files.
A markdown editor you and your agent co-edit
- Drafting and iterating on project plans with an AI agent
- Taking quick notes that your agent can read and act on
- Building landing pages or documentation with agent assistance
- Managing task lists and checklists collaboratively with AI
- Maintaining a personal wiki that your agent can navigate and update
- Open OpenMarkdown and create or open a .md file from your disk
- Use ⌘P to open the command palette and jump to any heading or file
- Drag to select text, then ask your agent to rework it in place
- Press ⌘+↩ to send a structured prompt to your agent
- Cycle through live preview, plain source, and clean reading modes with one key
- Autosave pauses when you stop typing; files are moved to Trash on delete

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