OpenMarkdown
A lightweight native editor for Agent prompts and local Markdown files
About OpenMarkdown
OpenMarkdown is a lightweight Markdown editor powered by a native Rust core, suited to writing Agent prompts as complete documents before handing them to an existing Agent. It takes a local-first approach, keeping notes as plain .md files on disk without a database; text is not rearranged, trimmed, or formatted when files open or close. Downloads are available for macOS, Windows, and Linux, with Agent collaborative editing on macOS and Linux.
Best for
Best use cases
Writing Agent prompts
Managing local Markdown notes
Agent collaborative editing on macOS/Linux
Editing text files across platforms
Features
Document Agent prompts
Use $EDITOR to write a complete prompt document, then hand it to an existing Agent.
Local Markdown files
Notes stay as plain .md files on disk; no database is created.
Byte-for-byte preservation
Text is not rearranged, trimmed, or formatted when files open or close.
Multi-platform downloads
macOS, Windows, and Linux versions are available; Agent collaborative editing is supported on macOS and Linux.
Pros
- Native Rust core
- Notes stored locally as plain Markdown files
- Byte-for-byte preservation when opening and closing files
- No accounts, cloud, or telemetry
Cons
- Agent collaborative editing for Windows is not yet available