An object-oriented class framework created by Metrowerks. Included is it's sidekick, Constructor.

Powerplant is IMHO, a very bad class framework. It requires you to learn a lot of toolbox, and it is very hard to use. It's code is written in a very unclear manner, which is bad because you have to go rooting around in it quite often. The good points are that it comes with CodeWarrior, and you can use only the more useful parts of it (i.e. you can just use it to handle an event loop, or to track mouse activity).