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. To see how some of our users have customised Miranda IM, check out the screenshot section.
Enhancements
Support for multiple accounts (without dll renaming) for all protocols
SSL support has been added to the core
Support for compressed HTTP transactions
AIM: Unicode messaging, status messages, profiles
AIM: Offline messaging
AIM: Set/retrieve status message for any status
AIM: Ability to set your own avatar
AIM: Privacy settings & lists support
AIM: Server groups support
AIM: Group Chat support
AIM: SSL server connection support
ICQ: Fixed receiving of multi-part messages (only first part was received)
ICQ: Fixed processing of UTF-8 encoded status messages from QIP
ICQ: New offline messages protocol (supports unicode)
ICQ: New user details protocol support (fully unicode aware)
ICQ: Added support for status notes & moods
ICQ: URL events are now received as normal messages
ICQ: Ability to send/receive contacts to/from ICQ6 and AIM
ICQ: Server-list support now groups requests
IRC: IRC servers now stored in the database
IRC: Filter for IRC channel list
IRC: Enhanced identd processing
IRC: Added menu item for nickserv commands
IRC: Auto request client info on adding to contacts or private message
IRC: Enhanced WhoIs request
IRC: CTCP events are shown in the server window
IRC: Close windows with ESC button
IRC: Quick Connect now allows manual input of server parameters
Jabber: Bunch of new XMPP extensions implemented (XEPs: 70, 83, 108, 147,
184, 224, 232 and other)