Onionshare is an open source file sharing application and software that allows users to securely and anonymously share files of any size with anyone. It works by using the Tor network and the onion routing protocol to hide the IP addresses of both the sender and the receiver and to encrypt all data sent over the network. Onionshare is different from other file sharing applications in that it does not require any type of registration or account setup. All you need to do is install the app and choose a file to share. Once the transfer is complete, the file is automatically deleted from the server, making it more secure and private than other file sharing services. Onionshare can be used to securely share files such as documents, photos, videos, and audio with anyone. It is available for Windows, Mac, and Linux operating systems.
Retroshare is a complete Swiss Army Knife of many secure and anonymous decentralized communication tools including file sharing. Optionally, it can be proxied through Tor, I2P and optionally fully routed through Tor, I2P also as a Hidden Service.