-
PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
-
Infinite ASCII diagrams, save to Google Drive, resize, freeform draw, and export straight to text/html.
-
GoJS is a JavaScript library for building interactive diagrams on HTML web pages. Build apps with flowcharts, org charts, BPMN, UML, modeling, and other visual graph types.
-
Create diagrams and visualizations using text and code.
-
The C4 model for visualising software architecture. Context, Containers, Components, and Code.