Pidgin

R&Q is a little instant messaging client for the ICQ protocol, fork of Rejetto's &RQ. It is simple, fast, takes a little more than 1 MB disk space and doesn't …

Crossplatform Jabber client. The core program is just a plugin loader - all functionality is made available via plugins. This enforces modularity and ensures well defined component interaction via interfaces.

Tencent QQ, generally referred to as QQ, is the most popular free instant messaging computer program in Mainland China, and has over 856.2 million users. In April 2010, QQ.com ranked …

Tkabber is a Free and Open Source client for the Jabber instant messaging system. Its writen in Tcl/Tk, and works on many platforms (tested on Linux, FreeBSD, NetBSD, Solaris, MacOS …

OneTeam – simple, secure and easy to use. OneTeam is a versatile instant messaging client that is very intuitive to use. Even people who are new to instant messaging will …

Connect with your friends on one simple platform. Use ISIM to combine all of your contacts from Skype, Google+ and Facebook. Staying in touch has never been this easy.

Tpad is a free program that uses the latest VoIP / SIP technology to bring free and crystal clear voice quality communications to any user all over the world. When …

MXit is a free, cheap to use, instant messenger for almost every phone on the earth. From chatrooms, games and shopping to movie clips, music and sport - this is …

Portuguese messenger publish by SAPO. It has a sending SMS feature and the user can make audio-visual calls. GTalk can be integrated with this instant messaging program.

Facebook Chat IM is a Desktop Messenger for Facebook. With it you can chat with all your Facebook friends directly from your Desktop. It has a simple and easy to …

Meebo is integrated, all-in-one instant messaging (IM client) that connects you with your friends everywhere. It supports a large number of popular servicesand connects you to MSN, Yahoo, AOL/AIM, MySpace, …

With Live Messenger you can chat online instantly in real time with friends, family and colleagues. Its faster than e-mail, more discreet than a phone call. Formerly known as MSN …

MDC (Multiple Direct Communicator) is a universal multiprotocol messenger supported by several operating systems including Windows, Linux and MacOS X, and protocols of ICQ, Mail.Agent, Jabber and others. It features …

Pandion is an open source instant messaging client for XMPP networks. Keep in touch with friends or collaborate with colleagues using Pandion instant messenger. Pandion is free software and uses …

Allegedly "cheap" phone calls with Jumblo. WARNING: expect to have payments disappear with zero recourse and have "free" minutes widely unavailable like any other betamax clone scam.

[Polish only] Comfortable and minimalistic multi-messenger. Allows you to communicate via XMPP, tlen and gadu-gadu protocol. Features avatars on every protocol. Develops in very quick way. Doesn't...

Tango brings you free, high-quality mobile video calls over 3G and Wi-Fi! Tango is an entertaining video calling service that connects people around the world in an exhilarating new way. …

Spark is an Open Source, cross-platform IM client optimized for businesses and organizations. It features built-in support for group chat, telephony integration, and strong security. It also offers a great...

VoxOx is the first ever Universal Communicator Service that manages all forms of cross-media communication for consumers. Signup *requires* user provide SMS capable mobile number. It is the only service …

Sim-IM is a multiple protocol instant messenger for MS Windows, GNU/Linux, FreeBSD. Sim-IM supports Jabber/XMPP, Google Talk, ICQ and AIM (Oscar), Yahoo! Messenger and Microsoft Messenger (MSN) protocols....

Miranda IM is the smaller, faster, easier instant messenger with support for multiple protocols. Designed from the ground-up to be resource efficient while still providing a rich feature set, Miranda …

Digsby is a multiprotocol IM client that lets you chat with all your friends on AIM, MSN, Yahoo, ICQ, Google Talk, and Jabber with one simple to manage buddy list. …

Softphone for VoIP, CAPI und TAPI. This application enables voice connections to landline , cellular network and VoIP. Phoner can be used as softphone on stationary and mobilecomputer devices attached …

XChat is an IRC chat program for both Linux (Open Source) and Windows (Shareware, 30-day trial). It allows you to join multiple IRC channels (chat rooms) at the same time, …

Miranda New Generation is a successor of a popular multi-protocol instant messaging client for Windows - Miranda IM. Very light on system resources and extremely fast.