Miranda IM open-source multi protocol instant messenger client. New version 0.10.10
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.