A native macOS Markdown and PDF reader/editor with folder search, edit mode, outlines, annotations, and scroll memory.
Houston-MD renders Markdown and PDFs with native macOS performance. Open a document by dragging it into the window or pressing ⌘O.
Supports GitHub Flavored Markdown, PDF reading, PDF text search, highlights, notes, and overlay-style PDF edits.
Tables, task lists, footnotes, strikethrough, autolinks — plus MDX support for .md, .mdx, and .markdown files.
190+ languages with automatic detection via highlight.js. Code blocks look as good as your editor.
Remembers your open files, active document, and scroll positions. Pick up exactly where you left off.
Open entire folders with ⌘Shift+O. File system watcher detects new, changed, and removed files in real time.
Drop files right into the window with visual feedback. Multi-file support with a clean sidebar to switch between docs.
⌘O open. ⌘Shift+O folder. ⌘W close. Arrow keys navigate. Built for flow.
Follows your system appearance automatically. Carefully tuned palettes for both modes.
Native Tauri v2 + WebKit. Opens in under a second. ~30 MB RAM at idle — not 300.
Remembers your scroll position per file. Switch between documents and return to exactly where you were.
Built on Tauri with native macOS WebKit — no bundled browser engine. Houston-MD is the local-first document reader/editor your Mac deserves.
Houston-MD is free and open source. Download the latest release or build from source.
Download Houston-MD 2.0