Autify for Mobile - Autify for Mobile is a no-code testing platform.
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.
Waldo for Android - No-code mobile testing that works
reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.
InVision Mobile Testing - New free, unlimited user testing for mobile prototypes
GeeTest CAPTCHA - GeeTest protects your websites, mobile Apps and APIs from bot threats.