Use Spreadtweet to login to your Twitter account: the interface looks like your working on a spreadsheet. Not just ideal to pretend you’re working, but also nice if you like a very simple and clean interface. Works on Mac and Windows.   Related posts: Update Your Twitter Account By Email

WeFollow is a user powered Twitter directory.     Related posts: Twitter Yellow Pages Manage Multiple Users Over Several Twitter Accounts Make Twitter Better

Tweetstats gives you Tweets per hour, Tweets per month, Tweet timeline and Reply statistics.     Related posts: Twitter App With Search And Stats Twitter Multiple Account Manager Manage Multiple Users Over Several Twitter Accounts

Get your Twitter grade and also suggestions on whom to follow at TwitterGrader.   Related posts: Twitter Karma Verify Your New Twitter Followers Join Twibes Twitter Groups

By using the Power Twitter Firefox addon you get URL expansion or shrinking, inline YouTube, Flickr, TwitPic, Google Maps, song.ly, search scoped to a specific user, custom settings, @mentions and more.   Related posts: Manage Multiple Users Over Several Twitter Accounts Join Twibes Twitter Groups Find Relevant Followers On Twitter

Subscribe to groups of Twitter users with one click. Choose from groups others have assembled, or create your own group at Twitterpacks/PBwiki.com.   Related posts: Manage Multiple Users Over Several Twitter Accounts Show Related Posts in WordPress Feed Your Blog To Twitter, identi.ca, HelloTxt or Ping.fm

Lots of tips and tricks on how to get the most out of Twitter at Twitips.   Related posts: Verify Your New Twitter Followers What’s Your Twitter Grade? Join Twibes Twitter Groups