f.lux - f. lux is a piece of software for Windows, Mac, Linux, iOS, and Android that provides a blue light filter over your screen. Research suggests limiting our exposure to blue light in the hours before bedtime can help us fall asleep faster.

altdrag - AltDrag allows you to move and resize windows much easier.

CareUEyes - CareUEyes is an eye protection software for windows that comes with blue light filter, screen dimmer, and break reminder

WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.

Dimmer - A very small and free utility for Windows to reduce brightness on LCD/TFT screens.

AquaSnap - Too many windows on your screen? Stop wasting your productivity.