MuM
A reading-first Markdown engine for macOS
Details
- External ID
- 1263042
- Source
- PH
- Company
- —
- Product
- MuM
- Website domain
- producthunt.com
- Launched
- Sept. 28, 2026
- Cohort
- —
- Upvotes
- 93
- Upvotes percentile
- 0.9833493692537951
- Tags
- Open Source, Developer Tools, GitHub
- Fetched at
- Sept. 30, 2026, 1:01 a.m.
- Updated at
- Sept. 30, 2026, 1:01 a.m.
Description
Your Markdown lives in a dozen folders. Most of the time you don't want to write — you just want to read one section. Every Markdown tool is a writing app with a preview pane. MuM is the opposite: a native macOS reader with no web engine inside — all AppKit. Several projects open at once, each remembering where you stopped. Cross-project search. Typesetting tuned for CJK as well as Latin. ~0.3s cold start, 1.7 MB download, 100+ fps scrolling a 5 MB document. Open source, MIT.
Enrichment
- Theme
- markdown editors and writing tools
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Prosumer
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- markdown reader and renderer for macos users
- Manually corrected
- False
Could you build this?
Partial Parsing and viewing markdown is simple, but building a 100% native AppKit macOS application with custom text layout engine (explicitly avoiding WebKit/Electron) requires specialized Apple ecosystem knowledge.
What it would actually take: The app requires native Swift and deep AppKit/TextKit 2 expertise to parse CommonMark into an attributed string hierarchy and handle custom AST-driven typographic layout without relying on WKWebView. A developer must have specialized macOS desktop engineering experience.
Competitors
Other products that read as similar to this one — 217 launches clear the similarity bar, closest 8 shown.
Attention rank: #8 of 218 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 305 days after the earliest competitor.
- Tim's Markdown Reader · ph · 2026-09-22 · 2 upvotes · similarity 0.59
- A fast, offline Markdown viewer for macOS built in Swift · hn · 2026-09-22 · 8 upvotes · similarity 0.53
- Markly · ph · 2026-09-25 · 62 upvotes · similarity 0.51
- macOS Native Markdown Reader with Vim Keybinding Using Swift · hn · 2026-06-29 · 7 upvotes · similarity 0.51
- Markdown Editor and Reader for Mac · hn · 2026-06-07 · 7 upvotes · similarity 0.50
- Moji · ph · 2026-09-11 · 109 upvotes · similarity 0.49
- Building a Markdown editor for Mac, iOS and web · hn · 2026-09-27 · 69 upvotes · similarity 0.49
- Marky · ph · 2026-09-19 · 2 upvotes · similarity 0.49
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a dev tools tool for Sales yet.