- Senders send messages stamped with Bitcoin ecash to Nostr relays. The Nostr relays collect the Bitcoin ecash, then deliver messages to receivers.



RetroShare is described as 'Open source, decentralized communication platform with encrypted chat, voice and video calls, file sharing using anonymous tunnels, forums, and channels' and is a very popular Video Calling app in the social & communications category. There are more than 100 alternatives to RetroShare for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best RetroShare alternative is Signal, which is both free and Open Source. Other great apps like RetroShare are LocalSend, Element, Discord and Tox.



Halite (named after the mineral) is a C++ BitTorrent client based on the excellent libtorrent library from Rasterbar Software. The program also relies heavily on the Boost libraries.

EiskaltDC++ is a program for UNIX-like systems that uses the Direct Connect and ADC protocol. It is compatible with other DC clients, such as the original DC from Neomodus, DC++ and derivatives. EiskaltDC++ also interoperates with all common DC hub software.



At this point in the digital world, our personal digital metadata – not just our messages, but data about who talks to whom, when, and where – has been marketed, auctioned, and monetized hundreds of thousands of times over.




Open source encrypted group-chat platform focused on privacy and efficiency, featuring Rust-based backend for speed, customizable interface, minimal data collection, real-time messaging, community-driven improvements, and ergonomic design for various use cases.

Fopnu is P2P File Sharing System. 100% Free, Simple and Easy to Use. Contains NO Spyware and NO Ads. Fully decentralized network. All shared files are indexed locally.




MLDonkey is an open source, multi-protocol, peer-to-peer file sharing application that runs as a back-end server application on many platforms. It can be controlled through a user interface provided by one of many separate front-ends, including a Web interface, telnet interface...

A Peer-to-Peer (Friend-to-Friend), decentralized, encrypted and secure application designed for communication and sharing.




Smoke Messenger is an open-source Instant Messenger that is known as the first mobile Messenger worlwide using the encryption algorithm McEliece. To be downloaded at F-Droid.org or Github.com. Smoke provides with its own Server-Software: SmokeStack-Echo-Server.




End-to-end encrypted chat, VOIP, and video calling used by millions of people.




Demonsaw is the next leap in the evolution of a free Internet, and the debut of social cryptography. Demonsaw is designed to protect your anonymity and hide what you're sharing.
