Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
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.
Hiya - Know who's calling or texting and block spammers on Android
reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.
Credo360 - Figure out who to trust by looking at a social credit score
Mollom - Mollom is a freemium web service to get rid of spam, unwanted content and fake users on your...