Speak Freely is a application for a variety of Unix workstations that allows you to talk (actually send voice, not typed characters) over a network.
If your network connection isn't fast enough to support real-time voice data, various forms of compression may allow you, assuming your
computer is fast enough, to converse nonetheless. To enable secure communications, encryption with DES, IDEA, and/or a key file is available. If
PGP is installed on the user's machine, it can be invoked automatically to exchange IDEA session keys for a given conversation. Speak Freely
for Unix is compatible with Speak Freely for Windows, and users of the two programs can intercommunicate.