Climm

climm is a free CLI-based instant messaging client that runs on a wide variety of platforms, including AmigaOS, BeOS, Windows, OS X, NetBSD/OpenBSD/FreeBSD, Linux, Solaris, HP-UX, and AIX.

Functionality

climm has many of the features the official ICQ client has, and more:

It has support for SSL-encrypted direct connection compatible with licq and SIM.
It supports OTR encrypted messages.
It is internationalized; German, English, and other translations are available, and it supports sending and receiving acknowledged and non-acknowledged Unicode-encoded messages.
It is capable of running several UINs at the same time and is very configurable.
Due to its command-line interface, it has good usability for blind users through text-to-speech interfaces or Braille devices.

climm also supports basic functionality of the XMPP protocol.

History

Climm was originally developed as mICQ by Matt D. Smith as public domain software. Starting with mICQ 0.4.8 it was licensed under the GPLv2, not much of the original PD code remained since then. All later additions were made by Rüdiger Kuhlmann, in particular, the support for the ICQ v8 protocol. mICQ was renamed to climm with version change to 0.6. CLimm was relicensed to include the OpenSSL exception.