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Today: 1,953 launches · Niche of the day: specialized calculation tools · See what launched today →

MB Viewer

Preview TSX, Markdown and Mermaid files offline instantly

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MB Viewer is a free, offline-first desktop application for previewing and editing technical files. Preview TSX/JSX React components without setting up a development environment. Work with Markdown, KaTeX mathematical expressions, Mermaid diagrams, and multiple files in split or quad views. Built for developers, technical writers, researchers, and AI-assisted coding workflows. No account. No cloud dependency. Just open your files and work. Available for Windows, macOS, and Linux.

PH · launched Nov 9, 2026 · 1 upvote (top 65%) · 0 views

Niche: developer data and local file viewers · 49 launches, 9 in the last 7 days · Explore this niche →

Category and tags
  • Horizontal
  • Dev tools
  • Developer
  • Not AI
  • Hobby / open-source project
  • Productivity
  • GitHub

Visit website ↗ Source listing ↗

More like this: all 49 launches in developer data and local file viewers →

Could you build this?

Yes A desktop previewer for TSX, Markdown, KaTeX, and Mermaid is a wrapper around existing open-source renderers and a bundler, which an AI coding assistant can assemble in Electron or Tauri.

Competitors

Other products that read as similar to this one : 217 launches clear the similarity bar, closest 8 shown.

Attention rank: #94 of 218 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 347 days after the earliest competitor.

  • Openly · ph · 2026-10-06 · 1 upvotes · similarity 0.61
  • splat · github · 2026-10-29 · 45 upvotes · similarity 0.49
  • Mermaid Design · ph · 2026-10-03 · 1 upvotes · similarity 0.49
  • Ferrite · hn · 2026-01-11 · 241 upvotes · similarity 0.49
  • Image Viewer · ph · 2026-11-06 · 2 upvotes · similarity 0.48
  • Moji · ph · 2026-09-11 · 109 upvotes · similarity 0.47
  • showmd · ph · 2026-04-13 · 202 upvotes · similarity 0.47
  • Markdown Viewer and Editor · hn · 2026-08-31 · 34 upvotes · similarity 0.46

Related data

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.