MSI Afterburner - Tool to manage video cards. Shows video card stats (temp, GPU usage, etc.).
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
ASUS GPU Tweak - ASUS GPU Tweak fully implements TechPowerUp’s GPU-Z analysis and monitoring features.
Shutter - Shutter is a feature-rich screenshot program.
EVGA Precision - This program allows you to fine tune your EVGA graphics card for the maximum performance possible...
Snipping Tool - Use Snipping Tool to capture a screen shot, or snip, of any object on your screen, and then annotate, save, or share the image