Netsukuku!

The Tor software protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world: it prevents somebody watching your Internet connection from learning what sites you visit, it prevents the sites you visit from learning your physical location, and it lets you access sites which are blocked.

I2P is an anonymizing network, offering a simple layer that identity-sensitive applications can use to securely communicate. All data is wrapped with several layers of encryption, and the network is both distributed and dynamic, with no trusted parties.

Freenet is free software which lets you anonymously share files, browse and publish "freesites" (web sites accessible only through Freenet) and chat on forums, without fear of censorship. Freenet is decentralised to make it less vulnerable to attack, and if used in "darknet" mode, where users only connect to their friends, is very difficult to detect.

CyberGhost VPN allows you to surf the Internet freely, as if in disguise, regardless of the type of application you use and from where you log in. It gives you the possibility to move around the Net unrecognized by third parties, to visit forums and exchange information and files with other Internet users as well as to chat and receive emails without the feeling of being watched. It's a tool to protect your identity, which otherwise would be left exposed to the ever-rising demands of business and politics. In a nutshell, CyberGhost VPN lets you leave your best impression on the Internet, which is precisely none. »

Orbot is an open source Tor Proxy App for Android Phones. If the phone is rooted, it can even transparently route all phone internet traffic through the Tor network. Should be installed alongside Orweb, an open source Tor web browser that will automatically use Orbot.

ProtonVPN is a highly secure and encrypted virtual private network (VPN). It is brought to you by the team of scientists from CERN and MIT that developed ProtonMail - the world’s largest encrypted email provider with over 2 million users, including journalists, activists and dissidents. Our encrypted tools empower users in over 150 countries to reclaim their freedom of expression and online privacy. You can use ProtonVPN to protect your online data, increase your online privacy and anonymize your surfing. We are incorporated in Switzerland and we keep no logs of your online activity. »

GNUnet is a framework for secure peer-to-peer networking that does not use any centralized or otherwise trusted services. A first service implemented on top of the networking layer allows anonymous censorship-resistant file-sharing. Anonymity is provided by making messages originating from a peer indistinguishable from messages that the peer is routing. All peers act as routers and use link-encrypted connections with stable bandwidth utilization to communicate with each other. GNUnet uses a simple, excess-based economic model to allocate resources. Peers in GNUnet monitor each others behavior with respect to resource usage; peers that contribute to the network are rewarded with better service. »

UltraSurf is a free software which enables users inside countries with heavy Internet censorship to visit any public web sites in the world safely and freely. Users in countries without internet censorship also use it to protect their internet privacy and security.

Cjdns (Caleb James DeLisle's Network Suite) is a networking protocol and reference implementation, founded on the ideology that networks should be easy to set up, protocols should scale up smoothly, and security should be ubiquitous.

Advanced Onion Router is a portable client for OR network and is intended to be an improved alternative for Tor+Vidalia+Privoxy bundle for Windows users. It is able to "force" a program and its plugins to use the Tor proxy regardless of its configured proxy.

Become anonymous online with OVPN. VPN service with unlimited bandwidth, no logs, strong encryption and an uptime guarantee of 99.5%

Calypso, formerly Kommute, is a cross platfrom file sharing client using the anonymous network MUTE. Developped using C++ and Qt. For windows and linux, portable to other environments. You can try it by following the installation instructions below.

ThePirateBrowser is a bundle package of the Tor client ( Vidalia ), Mozilla Firefox Portable browser (with FoxyProxy addon) and some custom configs that allows you to circumvent censorship that certain countries such as Iran, North Korea, United Kingdom, Belgium, Finland, Denmark, Italy and Ireland impose onto their citizens.