MondoZenGL is a light-weight class wrapper around the ZenGL library. It wraps almost every aspect of ZenGL into a class but still allows you direct access to the underlying ZenGL engine if your want or need to.
MondoZenGL is scene based. The idea is that your application consists of multiple scenes (like a startup screen, level select screen and actual levels). You create your own scene classes and let MondoZenGL take care of running them.
MondoZenGL comes with numerous demo applications, including class-based versions of all standard ZenGL demos. All demos are cross-platform and tested on Windows, Mac OS X and iOS (except where features are not supported on a specific platform, such as triangulation on iOS).