Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Snip&Sketch - Quickly annotate screenshots, photos and other images with your pen, touch, or mouse and save, paste or share with other apps.
MWSnap - MWSnap is basically a free to use Windows snapping tools that are used for snapping any part of the screen that is currently displaying on the front of all opened programs and windows.
Apowersoft Free Screen Capture - Apowersoft Free Screen Capture is the free online screen recorder that allows users to do unlimited recordings within a few clicks.
FastStone Capture - A powerful, lightweight, yet full-featured screen capture tool that allows you to easily capture...
NinjaCapture - All in on Screen Capture