draw.io
Self-hostable diagramming application
draw.io, also known as diagrams.net, is a feature-rich diagramming tool that can be fully self-hosted with Docker. It supports flowcharts, UML, network diagrams, and more.
Key features
- Flowcharts and UML diagrams
- Extensive shape libraries
- Works fully offline
- Many export formats
Strengths
- Released under the Apache-2.0 license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Mature project with 7.4k GitHub stars
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