Anca is a grand new H.323 client for Qt 3.x. It means that it allows communicating (voice/video) with other similar clients over internet, eg. Gnomemeeting. Its design is minimalist and clean; has a support for embedded devices. It is very modular because of plugin system. This release is a result of one year school work. See its homepage for more information.
Update: New Anca 0.9.1 was released. It should be compilable with the latest OpenH323 and PWLib!