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
YAYZY - Track the carbon footprint of each purchase in real-time
ShadowCrypt - Encrypts e-mails, Facebook status updates, tweets (Chrome)
Klima - Go carbon neutral