Gluezilla is a c/c++ library that provides a simple API to embed the Mozilla engine on applications in a cross-platform, version-independent way.

It is designed to use only frozen interfaces (as much as is possible) from the xulrunner sdk, runs on Linux and Windows, and doesn't require applications to use gtk (it accepts an X handle on Linux or a HWND on Windows and will run a gtk loop if mozilla needs it).