ManageFlitter is a favorite Twitter tool for unfollowing non-followers. The new beta version lets you select multiple Twitter accounts and with one click you can unfollow them.
There are many other features such as the ability to find fake Twitter followers and the most talkative Twitter followers! This tool will also let you effectively manage your Twitter account in general. Overall, ManageFlitter is one (free) tool that you will love.
For unfollowing your non-followers, you can use Geeky Flush. As the name suggests, this tool “flushes” the Twitter followers who do not follow you back.
Tweepi is a simple tool, and you can sort through the list and unfollow them one by one. Tweepi is not as fast as ManageFlitter, but it is very visually appealing.
Follower Filter is a useful Twitter unfollower tool because it offers more than just the ability to unfollow.
What I like most about this tool is that you can sort your lists based on many things, my favorite being “last activity”. This way, I can unfollow those non-followers who are not active, allowing me to improve my ‘follow to followers ratio’.