This is the code for a web application for creating personal heraldic devices. There is a live version of HeDGe, but it currently only works in Mozilla Firefox, in my recent testing at least.
All parts are licensed as the main licence except where otherwise noted, including the lions, eagle and dragon drawings (see main application page Acknowledgements for full details).
The main graphics technology standard is SVG. The transformations between HeDGe markup language in XML and SVG are done in XSLT. The styling is done in CSS.