TweetDeck by Twitter screenshots

It helps you build custom Twitter timelines on your Mac.

Alternative downloads

Echofon for Twitter
Free
rating

Echofon is an easy to use, super-fast Twitter app for the iPhone and iPod Touch.

Ambientweet
Free
rating

This program helps you keep track of the latest tweets.

twhirl
Free
rating

Compact Twitter client based on Adobe AIR.