We've just started a trial for our new multiclient IM software bing. Download is (and will stay) for free.
UI is optimized for Java phones and not for blackberry, but after getting used to it, it's quite comfortable and quick. Connects to ICQ/MSN/AIM as well as it's own network. GPRS/UMTS traffic consumption is very low. 1 sent Msg uses just ~0,25kb. (Settings -> System Info shows consumed traffic.)
3 important remarks for installation:
- Correct APN for tcp connections has to be entered on blackberry under settings -> advanced settings -> tcp
- App has to be downloaded with the Blackberry Browser from
http://wap.bing.im . (PC download and transfer via usb cable does not work)
- You can type in mobile numbers (eg. on setup screen) in international format without "+" too ("+" is not supported by blackberry input form).
Useful hints:
- By pressing the red hangup button you can put the app in the background.
- Keyboard Shortcuts: 0 ... toggles hide offline/online, # ... sound on/off, * ... lock keyboard
Give it a try and let me know what you think of it!