Mermaid Design
Free Mermaid editor with themes & ASCII rendering
This is 1 of 136 launches in developer design and diagramming tools — see how it stacks up on momentum and crowding →
175 other launches read as similar to this one →
Details
- External ID
- 1267467
- Source
- PH
- Company
- —
- Product
- Mermaid Design
- Website domain
- producthunt.com
- Launched
- Oct. 3, 2026
- Cohort
- —
- Upvotes
- 1
- Upvotes percentile
- 0.3352742299023291
- Tags
- Productivity, Developer Tools
- Fetched at
- Oct. 3, 2026, 5:01 p.m.
- Updated at
- Oct. 3, 2026, 5:01 p.m.
Description
A free online Mermaid diagram editor that runs 100% in your browser. Write Mermaid code and see it rendered live as crisp SVG — or switch to ASCII rendering to paste diagrams into code comments, terminals, and plain-text docs. Includes themes (Default, Neutral, Forest, Dark, Base), a template library covering flowcharts, sequence, class, state, ER, Gantt, mind maps, C4, Sankey and more, plus PNG/SVG/JPG/WebP export. No signup, no server upload — your diagrams never leave your device.
Enrichment
- Theme
- developer design and diagramming tools
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- mermaid diagram editor with ascii rendering for developers
- Manually corrected
- False
Could you build this?
Yes An in-browser diagram tool leveraging existing open-source libraries (mermaid.js, Monaco editor, and text-based graph renderers) running entirely client-side.
Competitors
Other products that read as similar to this one — 175 launches clear the similarity bar, closest 8 shown.
Attention rank: #102 of 176 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 333 days after the earliest competitor.
- Line9 · hn · 2026-08-06 · 87 upvotes · similarity 0.72
- Vloam Mermaid · ph · 2026-09-15 · 1 upvotes · similarity 0.70
- Visimer · hn · 2026-08-17 · 17 upvotes · similarity 0.66
- Ferrite · hn · 2026-01-11 · 241 upvotes · similarity 0.65
- Arialine · ph · 2026-09-30 · 1 upvotes · similarity 0.64
- FlowPeek · ph · 2026-09-11 · 2 upvotes · similarity 0.63
- Free Mermaid Diagram Editor · hn · 2026-07-07 · 51 upvotes · similarity 0.59
- Mmdr · hn · 2026-02-04 · 47 upvotes · similarity 0.58
Other launches for this product
- No other launches for this product.
Same idea, different domain
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