SIM-IM (SIM Instant Messenger) is a free software package licensed under the GNU General Public License (GPL).
Plugins-based instant messenger with support for various protocols.
Based on the Qt library and works on X11 (optional with KDE-support), MS Windows and MacOS X.
Main modules
Core is the program interface
Migrate - Converts the old SIM 0.8.3-settings to the
new 0.9x format
Homedir - sets the configuration-directory
Protocols modules
All protocol support richtext-messages, file transfer, typing notification, server-side contact list (wist postponed synchronization - you can change contact list in offline mode and after log on all changes will be synchronized with server), new account registration and various searches.
You can use some accounts for each protocols.
-Oscar - ICQ and AIM support
- Jabber
- MSN
-Yahoo!
Other modules
-about - shows product informations
-action - launch external programm on events (receiving message, change contact status) and from contact menu
-autoaway - automatic change status (Away, N/A, Offline) after some idle time
-background - user defined background for contact list
-dock - dock support
-filter - filter for receiving messages and users
-floaty - floating windows for contacts
-forward - forward messages to mobile phone
-gpg - adds GnuPG encryption/decryption support for messages
-icons - support JISP icon themes and smiles
-logger - support output log
-navigate - hyperlink support
-netmonitor - network monitor
-ontop - support of various windows attributes (always, no show in taskbar)
-osd - on-screen notification
-proxy - proxy-support (HTTP(S), SOCKS4, SOCKS5)
-replace - substitute prefered character sequences on input
-remote - remote control
-shortcuts - customize "shortcuts" for all commands
-spell - spell check
-sound - sound notification
-transparent - support transparency
-update - notification about new versions
-weather - periodically get weather data from weather.com and dispaly it
-windock - (only for windows) dock contact list
More details: http://sim-im.org/wiki/Main_Page