Twitterless – Tells you who stops following you and graphs your follower history over time, making this info available in a variety of useful views.

appTracks: Web
appTags: followers, following, graphs, lost followers

twitRand – A way to randomly select someone from your followers, retweeters, or friends.

appTracks: Web
appTags: followers, friends, random, randomly select, retweeters

Mr. Tweet – Find great people and followers relevant to your interests.

appTracks: Web
appTags: build relationships, followers, get followers

Tweepler – An easier, more enjoyable way of organizing and processing your followers.

appTracks: Web
appTags: followers, organizer, process, process followers, stats

Twitter Karma – See and compare who you follow, who follows you, and reciprocal follows.

appTracks: Web
appTags: followers, following

FriendorFollow – Find out who’s not following you back and who’s following you that you’re not following.

appTracks: Web
appTags: followers, following, process followers, tracking