Hi Product Hunt! I'm Changhyun, the maker of cmarks. I read a lot of Markdown I didn't write: READMEs, design docs, and lately the plans and checkpoint logs that Claude Code leaves in every repo it touches. Quick Look was my reader, and it disappeared the moment I clicked anything else. cmarks is a read-only Markdown viewer for macOS. A folder is a workspace; documents stay open in tabs and splits like a terminal multiplexer; and when a file changes on disk only the changed blocks re-render with your scroll intact, so you can watch an agent rewrite a plan. Rendering uses GitHub's own cmark-gfm and stylesheet, so what you see is what github.com will show. It also ships a Quick Look extension, a Follow-Finder mode, and a Raycast extension. Free and MIT. Notarized DMG and Homebrew tap on GitHub, or the Mac App Store build (sandboxed, same features except Follow Finder). Two things I'd love feedback on: the workspace/tab model (does it fit how you read docs?), and anything that renders differently from GitHub. That's a bug I want to fix.

cmarks

GitHub-accurate Markdown reader: tabs, splits, live reload

GitHub-accurate Markdown reader: tabs, splits, live reload