Retroshare estableix connexions xifrades entre tu i els teus amics per crear una xarxa d'ordinadors, i també ofereix diversos serveis distribuïts: fòrums, canals, xat, correu...
VeraCrypt
VeraCrypt is a free open source disk encryption software for Windows, Mac OSX and Linux.
[cerca entre ~650 aplicacions sense comerç]
The Tor software protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world.
OnionShare
OnionShare is an open source tool for securely and anonymously sending and receiving files using Tor onion services.