An instant messenger for local area networks enabling you to talk in real time to anybody on the same computer network. Offers Answering Machine, and Templates and Blacklist.

Instant messaging tutorials, reference, news and forums for AIM, MSN, Yahoo, ICQ, Trillian and other products.

A text mode menu and window-driven IM interface that supports the ICQ2000, Yahoo!, AIM, MSN, and IRC protocols and has many other useful features.

Free all in one instant messenger, including support for MSN Messenger, Yahoo Messenger, AOL Messenger, and ICQ Messenger.

EMSN is a PHP-Messaging System.

A fork of the Pidgin IM client, whose developers aim to be more responsive to the views and wishes of users. Project information, feature list, and download.

Offers a web-based solution to instant messaging that lets you talk to people with the AOL, MSN, YAHOO, and ICQ messangers.

A MSN protocol based client. Includes download section and screenshots.

Linux based, KDE specific, it is a flexible and extendable multiple protocol instant messenger.

Endogy provides Instant Messaging software and consulting services for the improvement of team workflow.