UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Moqups - The most stunning HTML5 app for creating resolution-independent SVG mockups, wireframes & interactive prototypes for your next project
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Axure RP - The prototyping and specification software used by 87% of the Fortune 100. Beyond mockups, design interactive prototypes for business solutions, websites, and applications.
LightShot - The fastest way to take a customizable screenshot.