Plug&Play Hardware simulation over a virtual bus system.
AVR simulator IDE
Simulated Airline Travel Solution Provider Library
OSE RTOS host simulator (windows and Linux/POSIX)
a very lightweight advanced terrain-rendering and 3D map rendering sys
Travel Market Simulator
SuperWikia: The Runtime/Realtime Environment for Codesmiths
"SiMTraM" Simulation of Mixed Traffic Mobility
VisualVNC is a connector between virtual network and physical network.
PunyKit - it's a very simple webkit-based browser.
The Basic Computer Assembler
MILE - MIPS Interactive Learning Environment