GEM (GEstures with Mouse) is a mouse gesture-based input mechanism.
Simple calculator realized with C++ and SFML
Java Fully-featured Script-Based Auto Clicker and Typer For Desktop
Cross-platform 2D game engine
STALLioN is a cross-platform C/C++ I/O library for CLI applications
Khmer keyboard, flexible keyboard for Khmer script
FW and HW design for a 7-key chording keyboard
flixel is a free Actionscript (Flash) library
The awesome jQuery step wizard plugin