Full Featured, Super Clean Twitter Apps.
Never Read a Tweet Twice/ Echofon automatically keeps unread tweets in sync between your computer, your iPhone and your iPad.
Ego gives you one central-and lovely-location to check web statistics that matter to you. You can quickly view the number of visits to your website (including daily, hourly and monthly numbers), how many people are following you on Twitter and more.
Share & discuss any topic with TwinglyTwingly is a powerful group communication and microblogging tool in the era of the realtime web. Share, discuss and have fun with friends, colleagues, strangers and others interested in the same topics as you.
"Tall Tweets will help you write tweets that are longer than 140 characters. The tool will slice and publish your "long tweet" into smaller chunks of 140 characters or you can even publish the entire messages as an image. Your Twitter followers will be able to read the entire message in their timeline itself."
Tool for updating all of your social networks at once.
I know you can set up twiiter to update facebook and linkedin, and your blog to tweet your posts, this just brings an extra level