Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
LightShot - The fastest way to take a customizable screenshot.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Nimbus Screenshot - Take screenshots and record video from your screen
FastStone Capture - A powerful, lightweight, yet full-featured screen capture tool that allows you to easily capture...
CloudApp - CloudApp allows you to share images, links, music, videos and files. Here is how it works: choose a file, drag it to the menubar and let us take care of the rest.