Friend Or Follow helps you manage your Twitter contacts. Submit your Twitter screen name to find out who you're following that's not following you back, and who's following you that you're not following back.
Friend or Follow is an excellent resource for professional Twitter users, works well and returns accurate information. This application identifies who you follow, who follows you and where the two lists meet. Information can be downloaded to Excel where you can manipulate data and act on it judiciously. Also helpful, lists can be sorted in several categories (Followers, Following, Account Age ... ) to help make informed account decisions. Great for a "Spring Cleaning" or quarterly review.