MSI Afterburner - Tool to manage video cards. Shows video card stats (temp, GPU usage, etc.).
Artemis RGB - An overview of the guides that'll teach you how to use Artemis
Guru3D - Guru of 3D: PC Hardware Reviews and tests
OpenRGB - OpenRGB is an all-in-one network-based software development kit that allows you to use third-party software to control all of your RGB.
ASUS GPU Tweak - ASUS GPU Tweak fully implements TechPowerUp’s GPU-Z analysis and monitoring features.
SignalRGB - Control and sync your favorite RGB devices from any brand.