Let's Enhance - Image upscaling supercharged

Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.

Typorama - Typorama: Text on Photo Editor is a Typography Art and Poster Maker application created and published by Apperto Ltd.

Shutter - Shutter is a feature-rich screenshot program.

Buffer - Buffer makes it super easy to share any page you're reading. Keep your Buffer topped up and we automagically share them for you through the day.

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