Open Hardware Monitor - Monitors temperature sensors, fan speeds, voltages, load and clock speeds, with optional graph.
ExitLag - There is a world without lags, freezes or loss of data packets. This world is called ExitLag! Get a free trial. Play better who plays with ExitLag!
Guru3D - Guru of 3D: PC Hardware Reviews and tests
Razer Cortex - A free all-in-one software which gives you the best gaming experience, featuring best gaming deals, PC and Mobile Game Booster, and more!
Geforce Experience - GeForce Experience is a new application from NVIDIA that optimizes your PC in two key ways.
WTFast - Play any online game from anywhere with a smoother connection and lower ping time. wtfast gives your fave games a VIP connection. Free trial available, too.