PLib is based off of the PALib Wiki platform tutorials and is supposed to become a platform game development library.
Features:
Character creation
Object Creation
Character Movement
Object Scrolling
Character and object collision
A level drawing function
And more to come…
Currently there is no release, but there is a video demonstrating PLibs abilities as of 11/1/08, located here: https://www.youtube.com/watch?v=iQlG1QEdORI