Wren - Offset your carbon footprint by saving rainforests
Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.
Website Carbon Calculator - Find out the how much CO2 your website emits
Location Finder - Find the optimal location to meet with your remote team
Treeapp - Plant a tree for free, every day, in less than a minute
FlyGRN - Flight search engine that offsets carbon emissions for free