Clutter is an open source software library for creating fast, visually rich and animated graphical user interfaces using OpenGL

Pigment is a GLib/GObject library designed to easily create rich application user interfaces embedding different media types. Its design allows to use it on several platforms, thanks to a plugin system allowing to choose the underlying graphical API.

Moodle is a course management system (CMS) to help educators create effective online learning communities.

Webservices that make scheduling meeting easy