heads is a libre (free as in freedom) GNU/Linux distribution. It aims to be a distro that respects your privacy, freedom, and helps you to stay secure and anonymous. It runs on GNU/Linux with kernel patches -libre and -grsec, runs live with a persistence mode powered by Tomb and routes all its traffic through Tor.
Ricochet is a peer-to-peer, anonymous and secure instant messaging system utilizing Tor. It allows chatting with anyone without exposing an identity or IP address. It does not reveal any meta data, contacts, as it does not rely on central servers.