TweetDeck is your personal browser for staying in touch with what's happening now, connecting you with your contacts across Twitter, Facebook and more. TweetDeck shows you everything you want to see at once, so you can stay organised and up to date.
For managing multiple brands this is a great tool to do your postings, A little heavy on the computer resources, especially if you have multiple API calls going at the same time. Never-the-less, good looking tool, easy to use and does what it is supposed to.
I can't imagine managing my twitter account without TweetDeck. I think it is the best way to keep track of tweets on the go. I use it on my Android phone, and find the column features to be incredibly useful. I can keep track of my mentions, retweets, hashtag searches, and lists all in one place. An amazing tool unrivaled by any other app on the social media scene.