Twitter audit
Twitteraudit.com
Audit a Twitter account to see the number of real and fake followers. The service is free for this and has a paid version for more advanced features. You can also see the Quality Score Per Follower.
Real and fake followers output
Followerwonk
https://followerwonk.com/analyze
Analysis of a username’s Twitter followers including where they are from, when they are most active. They also have whats called “Social Authority” to see a user’s influence and engagement on Twitter. It ranges from 1 to 100, where higher scores indicate a person with greater influential activity.
Dataprovider
View the social media activity connected to the domain. The hearbeat graph offers data on how often content is updated on the website. If you install the Chrome plugin then they also have traffic estimates.
SparkToro
https://sparktoro.com/tools/sparkscore
Check the true influence of a Twitter username. You can check up to 25 social media accounts per day for free.
