Finch is a command line instant messaging program for Windows, Linux,
BSD, and other Unixes. You can talk to your friends using Jabber/XMPP,
Bonjour, Gadu-Gadu, IRC, Novell GroupWise Messenger, Lotus Sametime,
SILC, SIMPLE, and Zephyr.

Homepage:
https://www.pidgin.im/
