Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Wren - Offset your carbon footprint by saving rainforests
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.
YAYZY - Track the carbon footprint of each purchase in real-time
FastStone Capture - A powerful, lightweight, yet full-featured screen capture tool that allows you to easily capture...
Klima - Go carbon neutral