diagrams.net (draw.io)

diagrams.net (branded draw.io) is a web-first diagramming and whiteboarding application that runs in the browser and as an offline desktop app. It provides a full-featured diagram editor for flowcharts, UML, org charts, wireframes and network diagrams, and integrates with common cloud storage and collaboration platforms.

Key Features

• Full client-side diagram editor with drag-and-drop shapes, connectors, layers and styling presets
• Large library of templates and icons for common diagram types (flowcharts, UML, ER, network, wireframes)
• Export/import to PNG, JPEG, SVG, PDF and native draw.io XML formats; versioned files and local storage options
• Integrations with cloud storage and platforms (Google Drive, OneDrive/SharePoint, Dropbox, GitHub/GitLab, Atlassian products) and a hosted web app entry point
• Official desktop builds (Electron) for Windows, macOS and Linux to support offline use and tighter security controls

Use Cases

• Create architecture diagrams, flowcharts and UML for design and engineering documentation
• Produce editable diagrams for product specs, onboarding docs and team knowledge bases stored in cloud repos
• Design wireframes and process maps for product, ops and network teams that require export to common formats

Limitations and Considerations

• The GitHub repository contains minified client code and the project notes that not all build sources are published; the project is not maintained as a fully open-source, buildable source tree and the team does not accept pull requests. This may limit ease of building custom forks from the repo.

diagrams.net (draw.io) is a mature, widely used diagramming tool that prioritizes a full client-side editing experience, multiple platform deployments (web and Electron desktop) and broad cloud integrations. It is suitable for technical and non-technical teams that need a versatile diagram editor without mandatory sign-in.