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Directory (FLOSS/FOSS)
Instant Messaging
Pidgin - is a free instant messaging program for Windows, Linux, BSD, and other Unixes. You can talk to your friends using AIM, ICQ, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, Novell GroupWise Messenger, QQ, Lotus Sametime, SILC, SIMPLE, and Zephyr. download page
Coccinella is a free and open-source cross-platform chat client with a built-in whiteboard for improved collaboration with other people. download page
Jabbin is an Open Source Jabber client program that allows free PC to PC calls using the VoIP system over the Jabber network. download page
Miranda IM is an open-source multi protocol instant messenger client for Microsoft Windows. download page
PlanetaMessenger.org is a universal Instant Messenger fully written in java. download page
Pongo is an MSN Instant Messenger client written in VisualWorks Smalltalk. Pongo runs on Intel Linux, Windows (95/98/ME/NT/2000/XP), Mac OS X, AIX, SGI Irix, Compaq UNIX, HP-UX, and Solaris. download page
TerraIM is an instant messaging client that connects to the AOL Instant Messenger network. download page
WinJab is a Jabber designed to run in any Windows (32 bit) environment. Jabber is an open source instant messaging architechture being built on top of XML. download page
other
- SIM-IM [GNU GPL] - SIM-IM (SIM Instant Messenger) is a free software package licensed under the GNU General Public License (GPL). SIM provides an plugins-based instant messenger with support for various protocols. Based on the Qt library it works on X11 (optional with KDE-support), MS Windows and MacOS X.
- aMSN [GNU GPL] - aMSN is a free open source MSN Messenger clone.
- Psi [GNU GPL] - Psi is the premiere Instant Messaging application designed for Microsoft Windows, Apple Mac OS X and GNU/Linux. Built upon an open protocol named Jabber, Psi is a fast and lightweight messaging client that utilises the best in open source technologies.
- Exodus [GNU GPL] - Exodus is a new Jabber ™ client being developed to be a "successor" to the very popular client Winjab. It's smaller, faster, easier to use, and looks better.
- CenterICQ [GNU GPL] - Centericq is a text mode menu- and window-driven IM interface that supports the ICQ2000, Yahoo!, AIM, IRC, MSN, Gadu-Gadu and Jabber protocols.
- Tkabber [GNU GPL] - Tkabber is a Free and Open Source client for the Jabber instant messaging system. It's writen in Tcl/Tk, and works on many platforms (tested on Linux, FreeBSD, NetBSD, Solaris, MacOS X and Windows 98/2000/XP).
- Ayttm [GNU GPL] - Ayttm is an instant messaging (aka chat) client that provides all-in-one chat functionality for several major instant messaging services from one simple program.
- BuddySpace [JOSL] - BuddySpace is an instant messenger with power messaging, maps and more...
- Gabber 2 [GNU GPL] - Gabber 2 is the next generation of Gabber: The Gnome Jabber Client. Gabber 2 is a Jabber client written in C++ using Gtkmm2 which is currently available for Linux and Mac OS X (under X11). Experimental versions are available for Windows.