This is a great tool for teachers who have multiple Twitter accounts. It allows you to access all your accounts from one place and follow and monitor your tweets.
TweetBackup as its name indicates allow users to back up their tweets and store them in an easy accessible platform.
This is a cool Twitter tool that allows you to instantly know those who unfollow you. If you are interested in managing your follower base then this tool would be of great help to you.
TwitBlock is a junk filter and bulk blocking tool for Twitter. It scans your followers for nuisance accounts and makes it easy to block them all in one place.