JustUnfollow is a tool from Twi5 that allows you to pick and choose who to unfollow, based on those that don’t follow you back. One thing they did right was to not make this a bulk tool. Right now you only get 50 people listed, but I imagine that will increase soon.
If they can add in ways to sort by not only who isn’t following you back, but also who hasn’t tweeted in a certain timeframe.
Filed under: Follower Management , followers, follower_management, unfollow
Sounds like the indux tools from implu. Have a look at http://social.implu.com/twitter_apps
–Steve
Thanks for listing JustUnfollow here. Nice suggestions for the app, I’ll see to it that these features are incorporated soon