Wren - Offset your carbon footprint by saving rainforests
Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.
YAYZY - Track the carbon footprint of each purchase in real-time
Location Finder - Find the optimal location to meet with your remote team
Capture - A great free screen capture utility that allows you to capture either a window or the desktop and save it to either a file or the clipboard.
FlyGRN - Flight search engine that offsets carbon emissions for free