Friend or Follow:
FriendorFollow is an twitter tool which will help you to get quick glance about your followers, mutual friends and fans. Thus you can easily select the twitter user who are following you and you want to follow them back.
Refollow is another tool which helps you to follow your followers. Apart from following tweeter followers in bulk, it also helps in managing your friends and followers, group them , filter unwanted users, use crowd tagging and comments and much more. It is a complete package to manage your followers on twitter.
Reciprocate tweepi :
Reciprocate is a Tweepi tool which gives you the number of followers whom you are not following and gives you option to follow them in bulk. Reciprocate is very user-friendly and is not messed up with other features.
Twitter Karma:
Karma is very popular free tool to follow your followers back that too easily and quickly. It also helps you to unfollow twitter users who are not following you. The best part about Twitter Karma is that there is no time-consuming process to follow or unfollow followers, you can do it in seconds.
I know this is very useful to us so keep tweeting and share this post on facebook , twitter , linkedin, google+ and more