Crossplatform Jabber/XMPP client. Vacuum-IM is a full-featured, tabbed instant messenger for Jabber/XMPP networks supporting profiles, multiple accounts, conferences, nested groups in roster, chat history, encryption, file transfer and status messages. It can use notifications, emoticons, customizable message styles, status icons and shortcuts, avatars and more. The program is cross-platform, written in Qt. The core program is just a plugin loader, all functionality is made available via plugins.