Do You Even List? - Auto updating Twitter list of people you interact with most
Timo - Time and task management in your browser ⏲
Listr - Listr lets you explore some of the best lists on Twitter, curated across your favorite categories.
Daily Routine - iOS app that schedules your day into key tasks
Vicariously.io - Create Twitter lists based on the follows of other users
QuickTwit - What's Trending In Your Favourite Topics of Interest