ChessDB is a free open-source chess database for Windows, Linux, Mac OSX and most UNIX and UNIX-like operating systems. ChessDB is based on code from Scid http://scid.sourceforge.net/ - a project for which there have been no updates for several years. In
Object Oriented Context Manager, serializer, editor API, targeted to extend short sized libraries able to play media objects as they are edited. Provides a virtual Machine, undo,merge,... API independant. Provides many extended libs. Demoscene oriented. https://www.youtube.com/watch?v=N86VfpYiz-Y
Open-Sourced version of the Russian police photo-identification system.
-- PEM - A tool like a visual debugger with a rich user interface(but there is much more to this than a debugger), it is better described using the example of Eclipse debugger. This tool inverts the debugger to develop code.