Openly
Free viewer for Markdown, Mermaid and JSON files
Get picks like this daily. The day's top launches, AI/tech news, and a weekly opportunity spotlight — straight to your inbox.
This is 1 of 30 launches in developer data and local file viewers — see how it stacks up on momentum and crowding →
219 other launches read as similar to this one →
Details
- External ID
- 1271097
- Source
- PH
- Company
- —
- Product
- Openly
- Website domain
- producthunt.com
- Launched
- Oct. 6, 2026
- Cohort
- —
- Upvotes
- 1
- Upvotes percentile
- 0.33
- Tags
- Chrome Extensions, Productivity, Developer Tools
Description
Free viewer for Markdown, Mermaid and JSON files: folder tree, search, TOC, math, diagrams, collapsible JSON, dark mode. • Opensmd files from your computer or the web, plusmmd /mermaid diagrams • Open a folder and switch files from the sidebar • Ctrl+K to search every file in the folder • Table of contents, light / dark theme • Code highlighting, math, Mermaid diagrams, task lists, alerts • Auto refresh while you edit
Enrichment
- Niche
- developer data and local file viewers
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- markdown, mermaid, and json file viewer for developers
- Manually corrected
- False
Could you build this?
Yes Openly is a client-side document viewer leveraging existing open-source libraries like Mermaid.js, Markdown-it/marked, and the browser File System Access API.
Competitors
Other products that read as similar to this one — 219 launches clear the similarity bar, closest 8 shown.
Attention rank: #104 of 220 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 336 days after the earliest competitor.
- Mermaid Design · ph · 2026-10-03 · 1 upvotes · similarity 0.62
- MDFK · ph · 2026-09-09 · 2 upvotes · similarity 0.57
- Ferrite · hn · 2026-01-11 · 241 upvotes · similarity 0.56
- showmd · ph · 2026-04-13 · 202 upvotes · similarity 0.54
- Visimer · hn · 2026-08-17 · 17 upvotes · similarity 0.52
- Markdown Viewer and Editor · hn · 2026-08-31 · 34 upvotes · similarity 0.52
- Moji · ph · 2026-09-11 · 109 upvotes · similarity 0.51
- View My JSON · ph · 2026-09-29 · 1 upvotes · similarity 0.51
Other launches for this product
- No other launches for this product.