New Project: wxWidgets based cross-platform GUI for Open Source databases
You might also want to investigate XUL (http://en.wikipedia.org/wiki/ XUL). In addition to having low level C/C++, you can provide the ability to create interfaces with XML and JavaScript. Applications can run stand alone (XUL Runner) and perhaps interesting XUL browser plugins would be possible.
John DeSoi, Ph.D. http://pgedit.com/ Power Tools for PostgreSQL
