TwitterDroid lets you read and publish to your Twitter, it is a kind of port of Twitterific, the excellent application for MacOS X.
TwitterDroid 0.1.2 is an early alpha stage software but it is already functional - you can read the latest 20 tweets from your friends and publish a post to your own timeline
Twitli is a Twitter client for Android phones. Twitli is aimed at providing a maximum number of features while keeping the user interface easy to use. The number of buttons is limited: rather than putting "follow" and "direct message" buttons on the screen, Twitli gives access to these features by clicking a user name
