draw.io

Why it's ranked here

The broad deployment choices and offline caching make it useful beyond a hosted service. Its scope is deliberately bounded: it creates diagrams and whiteboards, but does not replace an SVG editor or provide real-time co-editing.

What's good

Self-hosting is practical through GitHub Pages, Docker, or packaged web archives. The service worker precaches application assets, refreshes changed content, removes stale entries, and preserves previously fetched language resources for offline use. Export handling also accounts for mathematical typesetting.

Tradeoffs

This version lacks real-time collaborative editing. SVG output targets web embedding, not continued editing in other tools. The core team does not accept pull requests. Included icons, stencils, and templates carry restrictions for Atlassian products and its marketplace ecosystem.

How to use it well

Choose it for individuals or teams that need configurable diagramming with hosted, desktop, or self-managed deployment options. Use exports for publishing and embedding. Pick another tool when live co-editing, general SVG authoring, or community contribution through pull requests is essential.

Observed

License

Source code uses Apache License 2.0; bundled icons, stencils, and templates have an additional Atlassian ecosystem restriction.

Primary language

JavaScript

Deployment surfaces

GitHub Pages fork, official Docker image, desktop download, and packaged WAR files.

Interface

Configurable browser editor with a separate desktop edition.

Platform support

Chrome, Firefox, Safari, Opera, Edge, Android WebView, and iOS Safari are listed.

Contribution model

Pull requests are not accepted; development is handled entirely by the core team.