Speak Freely for Unix

Speak Freely for Unix is compatible with a variety of Unix systems. It allows network communications compatible with Speak Freely for Windows. The Unix program lacks the graphical user interface of the Windows edition, but supports all its compression and encryption modes.

The current version of Speak Freely for Unix is always posted in the directory:

http://www.fourmilab.ch/speakfree/unix/

See the manual pages for more details.