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OpenMarkdown
A markdown editor you and your agent co-edit
A fast, light markdown editor that opens any `.md` file instantly. Your agent reads, writes, and co-edits the same file you're in — through a CLI, an agent plugin, and MCP. Local-first: no account, no telemetry, your files never leave your disk.
Hey Product Hunt 👋 I'm XUEYANZ, and I built OpenMarkdown — a local-first, agent-native `.md` editor.
OpenMarkdown has two layers:
- Native agent read, write, and co-edit.
- Instant for peeking at `.md` files.
**About the agent**
Markdown files are more common than ever in the era of coding agents — AGENTS.md, CLAUDE.md, plan.md, design.md, and so on.
OpenMarkdown's CLI and MCP give your agent a direct line to:
- read what you've highlighted (only when asked — no monitoring, no copy-paste)
- find and jump to the target section (opening the file if it's closed)
- co-edit the very same file simultaneously
Note: there are no AI agents built into OpenMarkdown. And that's the point.
A single agent doesn't know all my projects. Luckily, I can fire up any agent and connect it to OpenMarkdown for project-specific context while I write.
So I built a "co-edit mode", where `- [ ] @agent turn these notes into a table` wakes the agent for real-time collaboration.
When it's done, the agent marks the item complete and appends a timestamp — which makes planning tasks trackable and countable.
**About the speed**
Existing `.md` editors feel slow when all I want is to peek at a file and make a quick correction.
With response speed in mind, it's built with Tauri 2 and purposely leaves out the caching that hogs a huge amount of RAM.
Because it's fast, I use it as my default `$VISUAL`/`$EDITOR` for composing Claude Code prompts — so I don't mis-send any half-written messages.
**It's free.** Try it at https://openmarkdown.dev.
macOS only today — Linux and Windows are close behind.
I'd love for you to try it and tell me what you think. I value every idea — it's what helps OpenMarkdown grow.
About OpenMarkdown on Product Hunt
“A markdown editor you and your agent co-edit”
OpenMarkdown was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #64 on the daily leaderboard. A fast, light markdown editor that opens any `.md` file instantly. Your agent reads, writes, and co-edits the same file you're in — through a CLI, an agent plugin, and MCP. Local-first: no account, no telemetry, your files never leave your disk.
On the analytics side, OpenMarkdown competes within Productivity, Notes and Developer Tools — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how OpenMarkdown performed against the three products that launched closest to it on the same day.
Who hunted OpenMarkdown?
OpenMarkdown was hunted by XUEYANZ. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of OpenMarkdown including community comment highlights and product details, visit the product overview.
XUEYANZ