Free Mermaid Diagram Editor
Details
- External ID
- 48825430
- Source
- HN
- Company
- —
- Product
- Free Mermaid Diagram Editor
- Website domain
- moxiedocs.com
- Launched
- July 7, 2026
- Cohort
- —
- Upvotes
- 51
- Upvotes percentile
- 0.8512544802867383
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
Description
I've been slowly adding some new free tools to Moxie Docs (partly for SEO, partly to illustrate some of our feature sets before any commitment) for some reason this mermaid editor one blew up on Google rankings so I figured I'd share in case people find it useful! We also have ADR, AGENTS.md, LLMs, and a few other free tools.
Enrichment
- Theme
- document and PDF utility tools
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- free mermaid diagram editor
- Manually corrected
- False
Could you build this?
Yes This is a frontend web application that pairs an editor (such as Monaco or CodeMirror) with the client-side Mermaid.js rendering library to preview and export diagrams.
Discussion
14 comments analyzed.
Competitors mentioned: Moxie Docs, Kroki, Graphviz, edotor, Omnigraffle
Concerns raised: GitHub renders large diagrams poorly, AI-generated diagrams often broken or useless without guardrails, Diagram aesthetics poor compared to manual design, Mermaid ecosystem quality issues, Official editor paywalled features
Feature requests: Better rendering for large diagrams on GitHub, Quality checks and templating for AI generation, Support for more diagram types (Gantt charts)
Competitors
Other products that read as similar to this one — 53 launches clear the similarity bar, closest 8 shown.
Attention rank: #9 of 54 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 221 days after the earliest competitor.
- Vloam Mermaid · ph · 2026-09-15 · 1 upvotes · similarity 0.55
- Visimer · hn · 2026-08-17 · 17 upvotes · similarity 0.51
- Line9 · hn · 2026-08-06 · 87 upvotes · similarity 0.47
- FlowPeek · ph · 2026-09-11 · 2 upvotes · similarity 0.43
- Arialine · ph · 2026-09-30 · 1 upvotes · similarity 0.43
- Ferrite · hn · 2026-01-11 · 241 upvotes · similarity 0.42
- Free, in-browser PDF editor · hn · 2026-03-28 · 54 upvotes · similarity 0.40
- A free, browser-only PDF tools collection built with Kimi k2.5 · hn · 2026-02-08 · 5 upvotes · similarity 0.39
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.