Psi is the premiere Instant Messaging application designed for Microsoft Windows, Apple Mac OS X and GNU/Linux. Built upon an open protocol named Jabber, this is a fast and lightweight messaging client that utilizes the best in open source technologies.

Psi is able to interoperate with other, proprietory messaging systems such as AOLТ‘s ICQ and MicrosoftТ‘s Messenger. You can keep in contact with your friends, regardless of whether they use AIM, ICQ, MSNM or YahooM. ItТ‘s even possible to use Internet Relay Chat!

What's New in version 0.12-RC4:

• user chat windows now join one on one chat windows and can be opened in tabbed form, either sharing a window, or seperately.
• The roster search has been updated, and now triggers a filter when typing into the roster window.
• An XML ringbuffer is now used, allowing access to already received XML in the XML console.
• When resolving a name for new contacts, the full name is now used if the nick name is missing from the vcard.
• Auto-connect on wake is now an independent option.
• MUCs can now be bookmarked, and auto-joined.
• The old config.xml file has been dropped in favour of the new options.xml format - all options in Psi can now be configured from the Advanced options pane (no more hand-editing of config files is required).
• Vcard avatars are now transmitted for the benefit of legacy clients and servers not supporting PEP.
• A new diagnostics group is available in the help menu, to allow debugging problems with the QCA security layer.
• Launching several instances of the same profile on Windows and Unices with DBUS now behaves more sensibly.
• On X11, the taskbar should now flash on new messages for compliant window managers.

Ссылка: http://download..et/psi/psi-0.12-RC4-win32.zip