Mermaid alternatives: 6 apps ranked by verified data
Common reasons people leave Mermaid: little control over layout, and large diagrams become hard to read. We ranked 6 alternatives by how directly each one replaces Mermaid, then by reviews, real visits and how recently each app's facts were checked against its own website. PlantUML currently ranks first.
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Show all 6 alternativesThe best Mermaid alternative for…
The highest-ranked app in this list for each need.
Best Mermaid alternative for most people
PlantUMLOlder text-to-diagram tool with deeper UML coverage and finer layout options.
Best Mermaid alternative for a free option
D2Newer diagram language with better-looking layouts and more styling control.
Best Mermaid alternative for a free plan you can upgrade
EraserDiagrams as code with a visual editor, AI and team features on top.
Best Mermaid alternative for open source
GraphvizThe classic graph layout engine for large node-and-edge graphs.
Best Mermaid alternative for self-hosting
StructurizrModels software architecture once in a DSL and generates many C4 views.
Best Mermaid alternative for Mac
draw.ioWhen you'd rather draw by hand, with a free editor that also imports Mermaid.
Best Mermaid alternative for Windows
PlantUMLOlder text-to-diagram tool with deeper UML coverage and finer layout options.
Best Mermaid alternative for Linux
PlantUMLOlder text-to-diagram tool with deeper UML coverage and finer layout options.
Best Mermaid alternative for working in the browser
PlantUMLOlder text-to-diagram tool with deeper UML coverage and finer layout options.
Mermaid alternatives: common questions
What is the best alternative to Mermaid?
PlantUML ranks first right now. Older text-to-diagram tool with deeper UML coverage and finer layout options. D2 and Graphviz follow it in our ranking.
Is there a free alternative to Mermaid?
Yes. PlantUML (open source), D2 (open source), Graphviz (open source) and Eraser (free plan + paid) have a free option. Check each app's verified facts for current plan limits.
Is there an open-source alternative to Mermaid?
Yes: PlantUML, D2, Graphviz and Structurizr, plus 1 more in the list above. PlantUML, Structurizr and draw.io can also be self-hosted.
Which Mermaid alternatives work on Linux?
PlantUML, D2, Graphviz and draw.io run on Linux.
Why do people switch from Mermaid?
The complaints we hear most: little control over layout; large diagrams become hard to read; styling options are limited.
How is this list ranked?
Every app is scored with the same published formula: how directly it replaces Mermaid, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.