Kerika is a proprietary, cross-platform, peer-to-peer software package, written in Java that works on Macs, Windows and Linux computers. (And Kerika is also the name of the company that produces this software.) Kerika facilitates collaboration within distributed teams, particularly where team members are using a variety of computers and are located in different organizations or locations. The software is offered as a subscription service to commercial users, but is free for educational/academic users.