Rocket: game interface design

Overview ¶

libRocket is a C++ interface middleware package designed for game applications. At its core it is based on the popular HTML and CSS specifications - we've taken most of the latest implementations used in web browsers now as well as a few of the most useful proposed additions to the specifications. It contains a full set of widgets so you can get creating screens right out of the box."

fonte:
http://librocket.com/

via:
http://www.gamedev.net/community/forums/topic.asp?topic_id=478704