MobileChat is an instant message client for the iPhone which supports AIM, ICQ, .MAC, MobileME, Windows live/ MSN, Yahoo, GTalk and Jabber. By using a server side connection all of your IM connections can remain active regardless of your iPhone’s connectivity. Drop out of coverage and the server takes over and keeps your connection alive. When you log back into the application all your messages (including those sent when offline) are waiting. Each of your IM accounts can be online simultaneously (up to 10 accounts). When Apple enables their Push notifications the MobileChat service will automatically support that feature. Cost is $2.99 and the program is available now in App Store via the link below.

MobileChat via App Store