TweetDeck by Twitter

TweetDeck by Twitter screenshots

It helps you build custom Twitter timelines on your Mac.
Checking Twitter Account Info
TweetDeck by Twitter 3.8 : Checking Twitter Account Info

Alternative downloads

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This application allows you to check your Facebook account from your desktop.
Twitter Automator Action Pack
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This action pack extends the power of Automator in Leopard with 10 actions.
Nocturn
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Manage multiple Twitter accounts and read and post tweets in your timeline.