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.
BitSpirit is a very powerful and easy-to-use BitTorrent client that provides not only full BitTorrent protocol implementation but also many personalization features.
croc is a tool that allows any two computers to simply and securely transfer files and folders. AFAIK, croc is the only CLI file-transfer tool that does all of the following:
Peer-to-peer messenger with real-time encrypted chat, secure file transfer, retro-inspired lightweight interface, no central servers, and only username and password retained for privacy. Built in C++ using modern cryptography and minimalist resource usage.
Perfect Dark is an anonymous peer to peer network which aims to become the #1 in Japan. You have to share at least 40 Gigabyte of your hard drive which is used for the networks exceptional storage system which works like a global RAID array.
safedrop provides secure conversations online. Users can share messages and large files with maximum security.
Facilitates community collaboration through voice, video, and text chat, integrated docs and tasks, configurable channels, roles, and permissions, seamless mobile and desktop access, rapid message reactions, file sharing, and notification controls for groups.
Lanshark is a free filesharing tool for local area networks. Lanshark allows you to share files with other users in the same network more efficiently. It automatically detects other lanshark users in the same Network and lets you browse trough their shares.
BitTorrent Client written in Go. It can be run locally or be hosted in Remote Server with good resources to use that Server as SeedBox. It is Single Completely Statically Linked Binary with Zero External Dependencies .
Acqlite is Gnutella file sharing program based on LimeWire, Acquisition and Cabos. It is free software and contains no spyware or adware. It provides a simple interface, multiple language support, and iTunes + iPod integration.
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