Vacuum-IM

Vacuum IM - it's free cross-platform Jabber-client written in Qt4. The principal difference from other cross-platform client is an open modular architecture that allows flexibility to customize the functionality to meet specific needs, as well as the use of the existing modules in the design of their own.

FEATURES:

Several independent profiles
Multiple accounts in one profile
Nested groups in the roster
Support JID shielded forbidden characters
Storing the history both locally and on the server with the ability to replicate stories from the server to your computer
Consistent off saving messages (mode OTR)
Full support for jabber conferences
Bookmarks at a conference with the ability to autologin
Support for CAPTCHA form, with the possibility of passage without the use of browser
Several named window with tabs for chats and conferences
Support for Adium message styles
Animated emoticons (when using Adium style)
Notification of user activity in the chat room
Automatic change of transport while preserving the names, locations, subscriptions and archive messages
Lists of privacy, with the ability to ignore or go into invisible mode for individual contacts and groups
Multi-stage automatic status change depending on time of inactivity
Ability to set different status icons for individual contacts and group contacts connected through transports
Support avatar with an opportunity to set an arbitrary contact image as an avatar
Comments to contacts
Ad-Hoc Team
File Transfer
XML console