Jing Project - ( free ) - the always-ready program that instantly captures and shares images and video from your computer to anywhere.
Jing Pro - ( costs $14.95/year ) - is now available in a Pro version for both Mac and PC. Pro features let you:
Atiz - Goodbye, scanner. Hello, digital camera.
Evernote - allows you to easily capture information in any environment using whatever device or platform you find most convenient, and makes this information accessible and searchable at any time, from anywhere.
ScreenCastle - one click screen casting.
TinyGrab - is a simple tool for screenshot sharing for both Mac OS X and Windows.
Aviary Screen Capture - A very simple screen capture tool.