tor
Tails is a portable operating system that protects against surveillance and censorship.
Tails uses the Tor network to protect your privacy online and help you avoid censorship.
Secure messaging anywhere.
Censorship-resistant peer-to-peer messaging that bypasses centralized servers. Connect via Bluetooth, Wi-Fi or Tor, with privacy built-in.
Related contents:
Onion addresses for anything.
onionpipe forwards ports on the local host to remote Onion addresses as Tor hidden services and vice-versa. onionpipe is a decentralized way to create virtually unstoppable global network tunnels.
An Efficient Communication System With Strong Anonymity
Real-time updated, P2P websites using Bitcoin cryptography and the BitTorrent network
Tor-ramdisk is a uClibc-based micro Linux distribution whose sole purpose is to securely host a Tor server purely in RAM. For those not familiar with Tor, it is a system which allows the user to construct encrypted virtual tunnels which are randomly relayed between Tor servers (nodes) until the connection finally exits to its destination on the internet. The encryption and random relaying resist traffic analysis in that a malicious sniffer cannot easily discover where the traffic is coming from or what data it contains. While not perfect in its efforts to provide users with anonymity, Tor does help protect against unscrupulous companies, individuals or agencies from "watching us". For more information, see the Tor official site.