Twitter Account Home - High level summary of your Twitter account and top Tweets
Listr - Listr lets you explore some of the best lists on Twitter, curated across your favorite categories.
Owlead - Grow your Twitter with valuable followers, effortless
Refined Twitter - A browser extension that improves the Twitter experience
Hedonometer - Measuring the average happiness on Twitter
Vicariously.io - Create Twitter lists based on the follows of other users