Editors' Note: You will be taken to a third-party site to complete your download. Using P2P and file-sharing software to distribute copyrighted material without authorization is illegal in the United States and many other countries. CBS Interactive does not encourage or condone the illegal duplication or distribution of copyrighted content.
RetroShare is an open-source cross-platform, private, and secure decentralized communication platform. It lets you securely chat and share files with your friends and family, using a web-of-trust to authenticate peers and OpenSSL to encrypt all communication. RetroShare provides file-sharing, chat, messages, forums and channels.