Goliath Auto Screen Capture is a free tool for taking rapid-fire screenshots. The user can simply select an area of the screen to capture, then use their computer as usual until ready to end the recording.
A powerful C++ class library for image manipulation
ImageStone is a powerful C++ class library for image manipulation. Its features include load, save, display, transformation, and nearly 100 special image effects. It can be used cross platform (includes Windows, Linux, Mac), and especially under windows it can be used as a DIB wrapper class.