inEvo has a great know-how on SVG and SVG editor. We already have a framework in ActionScript (flash) to allow SVG edition and creation of graphical applications with SVG elements.

Now, we are working on a project, ColaDI, where we are also developing a new SVG framework but for Javascript (and GWT) so we can use this technology in HTML5.
This new framework will allow the same kind of application as SVG Library but without any plugins (flash) on the browser. 

By now, a lot of features are already implemented, like camera, creation, editon (resize, rotation, etc), loading, exporting, etc..

We intend to release this library as open source in the future but if you want early access you can contact us.
This framework is based on lib-gwt-svg, a great library to add SVG DOM elements to a gwt application.

Here is a demo video of the current state.