GeckoCIRCUITS is THE circuit simulator for modeling power electronics
GeckoCIRCUITS is THE circuit simulator for modeling power electronics systems. Besides its fast circuit simulation capability, GeckoCIRCUITS combines control modelling and thermal simulations via equivalent networks in an easy-to-use software package. GeckoCIRCUITS has its strengths in the extremely high simulation speed and its open interface. The software can be integrated into MATLAB/Simulink or other programming environments.
GaugeBook displays Gauges of your FSX (with SP2 or Acceleration) and gives you control over a lot of Settings. Change Frequencies, QNH, etc with a few mouse clicks. It's still beta but the new G1000 is a blast. Runs smooth on any notebook.
Road traffic simulator/game with lots of vehicules, different drivers characteristics, accidents, detours, manual or script-driven traffic lights control, pedestrian traffic, road-works, and plenty more! Solve your simulated traffic-jams problems!