eDominations - multiplayer strategy game
KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
eRepublik - eRepublik is a Free to play, Browser-based and Massively Multiplayer Online video game created and published by eRepublik Labs.
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
NationStates - NationStates is an innovative, browser-based game that tries to simulate the real challenges and turmoils that come from trying to govern a modern state.
QUCS - Qucs, briefly for Quite Universal Circuit Simulator, is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit.