Konfidi is a trust framework that uses topical trust values from a social network of authenticated people. When you receive an email from someone you do not know, but he/she is in the network, Konfidi will compute an inferred trust value for you.
VC² is a tool that integrates with off-the-shelf version control systems and monitors file system access in order to enhance awareness among users. The tool warns about actions made by other users and suggests conflict avoiding actions.