Snip&Sketch - Quickly annotate screenshots, photos and other images with your pen, touch, or mouse and save, paste or share with other apps.
Sketch - Professional digital design for Mac.
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.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
NinjaCapture - All in on Screen Capture
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.