Confidential CC - Send self-destructing email without leaving a trace
Wren - Offset your carbon footprint by saving rainforests
sup3rS3cretMes5age - A safe, simple tool for one-time (self-destructing) messages
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.
ShadowCrypt - Encrypts e-mails, Facebook status updates, tweets (Chrome)
Treepoints - Fight climate change and earn rewards