Miranda
IM is a multi protocol instant messenger client.
Miranda IM is designed to be resource efficient and easy to use. It
uses very little memory and requires no installation. Just unzip and
run! This also makes it ideal for users that want to run their
messenger client from a removable storage such as an USB memory stick.
It can even be stored on a floppy disc if not too many plugins are
used.
The
powerful plugin system makes Miranda IM extremely flexible. Only the
most basic features are built in, but there are currently more than
350 plugins available for download that allows users to extend the
functionality in Miranda IM. Plugins can be installed to add support
for ICQ, AIM, MSN, Jabber, Yahoo, Gadu-Gadu, Tlen, Netsend and other protocols.