Wren - Offset your carbon footprint by saving rainforests
Sociall (Beta) - A secure and private decentralised social network for all.
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.
Manyverse - A social network off the grid
Treepoints - Fight climate change and earn rewards
data.world - The social network for data people