OpenMarkdown, compared
OpenMarkdown is deliberately narrow: a feather-light renderer for the plain .md files you and your coding agent share. Most Markdown apps are aiming at a different job — so here's an honest look, including where they beat us.
How we compare, fairly
Three ground rules keep these pages honest:
- We list what we lose. Every table below includes the rows where the other tool wins — platforms, export, maturity, whatever it is. If a comparison only flatters us, it's broken.
- Local-first isn't our edge against other editors. Typora, Obsidian, Marked 2, iA Writer and VS Code are all local apps that keep plain files with no account — so we don't pretend that's a difference; it's a tie. (The one exception is Apple Notes, which keeps your notes in a proprietary database — there, owning a plain
.mdfile genuinely is the difference.) - One thing is genuinely ours: your agent opens, reads, and section-edits the same file over a built-in MCP server, and you watch it render live — with section-level conflict protection so your unsaved edits don't get clobbered. None of these tools do that. (Agent co-editing runs on macOS and Linux today; the Windows app is a native editor with it coming soon.)
So the honest question isn't "which is the best Markdown editor" — it's "do you want to watch and co-edit the file your agent is working on?" If yes, read on. If you want a knowledge base, a mobile app, or rich export, one of them is the better pick, and each page says so.
Pick a comparison
- OpenMarkdown vs Typora — the seamless inline-WYSIWYG editor. Mature, cross-platform, rich export; no agent integration.
- OpenMarkdown vs Obsidian — the knowledge base. Graph, backlinks, canvas, a huge plugin ecosystem; a different job entirely.
- OpenMarkdown vs Marked 2 — the file-watching previewer. Closest to "watch my agent's file," but preview-only: you can't edit in it.
- OpenMarkdown vs iA Writer — the focused writing environment. Beautiful typography, cross-platform incl. mobile; built for solo prose.
- OpenMarkdown vs VS Code — the IDE your agent probably already runs in. There Markdown is a side preview pane; here it's the whole surface. Often used alongside, not instead.
- OpenMarkdown vs Apple Notes — the built-in default. Free and everywhere, but notes live in a proprietary database, not plain files an agent can touch.