Looking for Twitter tool so would be great if you explain why you like that Twitter tool?
I use the tool FollowerAudit, which is a Twitter tracking tool.
I use this tool because before I came across this tool, I had to use different tools for different functions which were becoming hard to manage.
FollowerAudit has various different features that are - finding fake followers, identifying ghost followers, tracking followers growth, tracking unfollowers, real-time alerts whenever someone unfollows you, detailed followers analytics.
All these features can be used to track any public Twitter account.
And the added benefit of this tool is its affordable plans compared to other tools.