jTwitter is a Java application that you install on your phone. It allows you to enter twitter updates using your phone without having to send SMS´s. It also allows you to view your timeline, friends timelines, public and featured timelines.
jTwitter only refreshes when you request it to. You can leave it on all the time without fear of running up data charges.
ceTwit is a Windows mobile twitter client written in c# leveraging the .NET compact framework. Current Feature Set: Timeline display...
NatsuLion is an open-source Twitter client for Mac OS X. Some features of NatsuLion: Display your friend timeline Post a...