Instantbird
instantbird is an instant messaging client based on mozilla xulrunner and the open source library libpurple created by the software developers of pidgin .
Miranda IM is the smaller, faster, easier instant messenger with support for multiple protocols.
Miranda IM is the smaller, faster, easier instant messenger with support for multiple protocols. Designed from the groundup to be resource efficient while still providing a rich feature set, Miranda includes support for AIM, Jabber, ICQ, IRC, MSN, Yahoo, GaduGadu and more. Additionally, with the choice of hundreds of plugins, icons, sounds and other content.
Productivity Social Online Services Web Browsers
portable chat-clients instant-messaging icq im-client irc jabber multi-protocol xmpp msn yahoo instant-message-client multi-messenger
instantbird is an instant messaging client based on mozilla xulrunner and the open source library libpurple created by the software developers of pidgin .
Free Open Source Mac OS X Windows Linux
Quassel IRC is a modern, cross-platform, distributed IRC client based on the Qt4 framework.
Free Open Source Mac OS X Windows Linux Self-Hosted
QIP Infium is a multiprotocol instant messaging client. It supports ICQ (OSCAR), Jabber (XMPP), Mail.ru Agnet (MRA), IRC, XIMSS, SIP, Twitter, Facebook and other.
Free Windows iPhone S60
Coccinella is a free and open-source cross-platform instant messaging client with a built-in whiteboard for improved collaboration with other people.
Free Open Source Mac OS X Windows Linux BSD
A simple & beautiful app for Facebook Messenger. Chat without distractions on any Operating System.
Free Open Source Mac OS X Windows Linux
AQQ is a Polish (but available in English) multiprotocol instant messenger with support of: AQQ, Jabber, Gadu-Gadu, Tlen and ICQ.
Free Windows