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This is the client part of Sprotty, a next-generation, open-source diagramming framework built with web technologies.

Some selected features:

  • Fast, scalable SVG rendering that is compatible with all modern browsers and stylable with CSS
  • Animations built into the core
  • Support for a distributed runtime with client and server
  • Fast, reactive client architecture implemented in TypeScript
  • Java or Node.js based server architecture
  • Configuration via dependency injection
  • Integrations with Xtext, Langium, the Language Server Protocol, VS Code and Theia
  • Can be run as rich-client as well as in the browser


The Sprotty project spans across four GitHub repositories.

  • sprotty (this repository) contains the client code (sprotty), shared code for Node.js servers (sprotty-protocol), ELK layout integration (sprotty-elk) and examples.
  • sprotty-server contains server code for Java and includes server-side diagram layout, the extension of the Language Server Protocol, and the integration with the Xtext framework.
  • sprotty-theia contains the glue code to integrate Sprotty views in the Theia IDE.
  • sprotty-vscode contains the glue code to integrate Sprotty views in VS Code.

The project is built on


For further information please consult the Wiki.

The version history is documented in the CHANGELOG (see also links to other packages there).