http://g4c3eya4clenolymqbpgwz3q3tawoxw56yhzk4vugqrl6dtu3ejvhjid.onion/recommendations.html
Cryptsetup / LUKS - the container based general purpose and full-disk encryption stack for Linux 7-Zip - a great general purpose file compression and encryption tool that achieves great file compression and that not only encrypts the file contents
of the files in question but the file names and (probably) other metadata as well GNU Privacy Guard - a great tool to sign, and encrypt data of any kind.