Owlead - Grow your Twitter with valuable followers, effortless
hCaptcha - Do you use a captcha to keep out bots? hCaptcha is a drop-in replacement for reCAPTCHA that earns website owners money and helps companies get their data labeled.
Flamingo for Twitter - Flamingo for Twitter is a bright and colorful Twitter client that comes with a simple interface.
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.
Tweeticide - Tweeticide – Delete All Tweets is a commercial app that enables you to delete all of your tweets at once.
MTcaptcha - Enterprise Captcha solutions