Miranda IM is a multi-protocol instant messaging client for Windows. Very light on system resources and extremely fast, Miranda IM requires no installation and can be made to fit on a single floppy disk or USB drive. Featuring a powerful plugin-based framework and boasting over 350 plugins, Miranda IM is one of the most flexible and customisable messaging clients on the planet.
* Jabber: Fixed PLAIN authentication with Unicode usernames/passwords
* Gadu-Gadu: Fixed memory leaks
Internet and communication
Product page: here