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.

Mia for Gmail
rating

Mia for Gmail (was Notifier Pro for Gmail) is a desktop Gmail client which sits politely in your menu bar.

Ambientweet
FREE
rating

This program helps you keep track of the latest tweets.