Freetalk

If you're looking for a console based Jabber client, Freetalk is definitely worth considering. Its readline interface is a standout feature, offering completion of buddy names, commands, and even ordinary English words. This makes communication faster and more efficient.

One of Freetalk's major selling points is its customizability. The client is extensible, configurable, and scriptable through a Guile interface. This means that you can tailor the client to your specific needs and preferences, using the programming language Guile to modify its functionality.

The latest release of Freetalk introduces several new features, including support for in-band registration and preliminary file transfer. Additionally, the client now offers localization support and has undergone several cosmetic changes. The developers have also added a few new commands to expand its functionality even further.

Overall, Freetalk is a powerful and flexible Jabber client that's easy to use and customize. Its readline interface is a definite highlight, and its extensibility and scripting capabilities make it a great choice for users who want to tailor their messaging experience to their own preferences.