Jalava is a pure Javascript diagram editor. Unlike Windows-based programs, Jalava runs on your web browser. No Flash, no Java applets, no SVG. It is designed to be easily customised, so you can design your own editor using the framework provided.
SvgUP is an open source platform for building interactive Web applications based on SVG components and other web standards like JavaScript, CSS, RDF and DTD. SvgUP allows the separation of concerns by dividing the applications into modules.