Adblock Plus is a free extension that allows you to - among other things - block annoying ads, disable tracking and block domains known to spread malware.
HTTPS Everywhere is a browser extension produced as a collaboration between The Tor Project and the Electronic Frontier Foundation. It encrypts your communications with a number of major websites.
The NoScript Firefox extension provides extra protection for Firefox, Seamonkey and other mozilla-based browsers: this free, open source add-on allows JavaScript, Java, Flash and other plugins to be executed only by trusted web sites of your choice (e.g. your online bank).
Secure Swiss-based email with end-to-end encryption and zero third-party access. Available across devices, offering a free version to promote privacy.
An encrypted messaging app focused on privacy, supporting texts, calls, photos, videos, files, and group chats, with no ads or trackers.
OpenWrt Project is a Linux operating system targeting embedded devices. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management. This frees you from the application selection and configuration provided by the...
Chat with your friends, securely. Cryptocat is free software with a simple mission: everyone should be able to chat with their friends in privacy.
Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third party interference.
CryptoKitties is a game centered around breedable, collectible, and oh-so-adorable creatures we call CryptoKitties! Each cat is one-of-a-kind and 100% owned by you; it cannot be replicated, taken away, or destroyed.
Decentralized game about kitties, working on the blockchain and ethereum.
Gufw is an easy, intuitive way to manage your Linux firewall. It supports common tasks such as allowing or blocking pre-configured, common p2p, or individual ports port(s), and many others! Gufw is powered by Uncomplicated Firewall (ufw).
Tuning iptables in GUI.
LUKS is the standard for Linux hard disk encryption. By providing a standard on-disk-format, it does not only facilitate compatibility among distributions, but also provides secure management of multiple user passwords.
Cross-platform email client providing POP/IMAP support, robust filtering, multiple accounts, and chat. Extendable via add-ons with RSS/Atom, etc.
Convenient, fast and private email client, but vulnerable.
Privacy-focused search engine using Google results without trackers, storing no personal data, and offering Anonymous View for private browsing.
Ixquick is best private search engine.
Bitmessage is a P2P communications protocol used to send encrypted messages to another person or to many subscribers. It is decentralized and trustless, meaning that you need-not inherently trust any entities like root certificate authorities.
Very-very-very anonymous messenger. 10/10.
Open source, decentralized communication platform with encrypted chat, voice and video calls, file sharing using anonymous tunnels, forums, and channels.
Tribler is an application that enables its users to find, enjoy and share content. With content we mean video, audio, pictures, and much more. Tribler has three goals in helping you, the user: find, consume and share content.
Decentralized torrent-client and torrent-trecker.
Free BIOS firmware.
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...
Security browser, but vulnerable.
Beaker is a an experimental peer-to-peer web browser based on Hyper protocol. It's licensed MIT, and supports plugins for adding new protocols and Web APIs.
IPFS is a global, versioned, peer-to-peer filesystem. It combines ideas from Git, BitTorrent, Kademlia, SFS, and the web. It is like a single bittorrent swarm, exchanging git objects. IPFS provides an interface as simple as the HTTP web, but with permanence built in.
ZeroNet uses cryptography (Bitcoin library) and BitTorrent DHT (centralized trackers) to build a distributed censorship-resistant network.
With the rise of widespread government monitoring programs, Tox is an easy to use application that allows you to connect with friends and loved ones without anyone else listening in.
Experience instant messaging with remarkable speed and robust security. Join massive group chats or channels. Enjoy free and advanced features.
Telegram is privacy messenger, but need use SOCKS5/MTProto proxy.
Gnuzilla is the GNU version of the Mozilla suite, and GNU IceCat is the GNU version of the 
Mozilla Firefox browser. Its main advantage is an ethical one: it is entirely free software.
IceCat is free and privacy browser.
A project providing a fully free (as in freedom) derivative of 
Arch Linux. Inheriting Arch's lightweight and flexibility, Parabola offers software freedom plus all power to the users.
Parabola - GNU/Linux-libre system, free and open.
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