Problem
Teams need diagramming tools for architecture maps, flowcharts, UML diagrams, entity-relationship models, and process documentation, but many hosted whiteboards store drawings inside a closed workspace. diagrams.net, still widely known as draw.io, solves that problem with a browser-based and desktop editor built around portable diagram files.
Approach
The editor focuses on structured technical diagrams rather than informal sticky-note sessions. It ships with shape libraries, connectors, export formats, templates, and integrations for storage providers. Developers can keep diagrams as files in Git or attach them to documentation, which makes review and long-term ownership easier.
Self-hosting
Self-hosting is available for organizations that want internal diagramming behind their own authentication or network boundary. The desktop app also gives individuals an offline workflow, which is useful for confidential architecture work or travel.
Who it's for
diagrams.net is best for engineers, architects, technical writers, and operations teams that need precise diagrams for documentation, runbooks, design reviews, and incident analysis.
Comparison with paid tools
Compared to paid diagramming platforms and proprietary tools such as Lucidchart, Microsoft Visio, and Miro, diagrams.net emphasizes portable files, broad diagram type support, and no required account for core use. It is less focused on workshop facilitation, but it is stronger when the diagram should live beside technical documentation.
