KShare

KShare is a screenshotting utility built using Qt and written in C++. It has many features, including:

Area capture, Fullscreen capture, Active window capture, Magnifier, to make those aligments, Drawing on screenshots (blur, shapes, text, …), Recording, Highly customizable video codecs, Automatic upload/clipboard copying, Hotkeys, Color picker, and last but not least, Custom upload destinations It works on Linux, Windows, and Mac OS X, one program, one format, same functionality