A circuit simulator with graphical user interface (GUI)
An advanced network simulator to design and configure virtual networks
Air traffic control tower and radar simulator (solo + multi-player)
Robot simulator inspired by Sim.I.Am
Multiscale Neuroscience and Systems Biology Simulator
Automatic chooser of optimal fleet (with limits) for ogame browser gam
A disassembler and a simulator for the MSP430 CPU
PunyKit - it's a very simple webkit-based browser.