X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.
ilo - Premium Twitter analytics
Botometer for Twitter - Intelligence tool to check if a Twitter account is a bot
Seekmetrics - Instagram, Facebook and Twitter Analytics.
Twitter Bots - Make smart Twitter bots without coding
Accountanalysis - A tool to evaluate Twitter accounts