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.
* Nested roster groups * Multiple accounts in profile * Support for Adium message styles * Full support for Jabber conferences * Easy access to recent contacts and conferences * Ability to combine contact to meta-contact from several accounts * Storage of history both locally and on the server (XEP-136) * Create a bookmark at the conference with the possibility autologin * Support for CAPTCHA forms, with the possibility of transmission without the use of browser * Automated change of transport with preservation of names, groups, subscriptions and archive messages * Lists of privacy, with the possibility of ignoring or setting in invisible mode for individual contacts and groups * Multi-stage automatic change of status depending on the time of inactivity * Ability to set different status icons for individual contacts, and groups of contacts are connected through transport * Support for avatars with the ability to specify a contact an arbitrary image as an avatar * Ability to add annotation to contact
