You can message and share files inside your intranet without a server.
Implementation of the EDIINT AS2 protocol (RFC 4130)
Stream manager
Quickly, simultaneously issue SSH commands to multiple Linux machines
Easily open multiple SSH login terminals to Linux servers
шифрованная AES переписка во vk.com
Underground IM is a free Java Instant Messaging solution.
A P2P Messenger which uses JXTA. It provides secure RSA/AES end-to-end