Borderless Gaming is a simple tool that will allow you to turn your windowed video games into "fullscreen" applications.
Logitech Gaming Software
Lets you customize functions on Logitech gaming mice, keyboards, headsets, and select wheels.
Room EQ Wizard
REW is free room acoustics analysis software for measuring and analysing room and loudspeaker responses.
LaunchBox was originally built as an attractive frontend to DOSBox, but has since expanded to support both modern PC games and emulated console platforms.
Corsair Utility Engine allows you to control and synchronize dynamic lighting and macro effects.
Equalizer APO is a parametric equalizer for Windows. It is implemented as an Audio Processing Object (APO) for the system effect infrastructure introduced with Windows Vista.
[DEPRECATED] Open Broadcaster Software
Open Broadcaster Software is free and open source software for video recording and live streaming.