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.
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
reCAPTCHA - reCAPTCHA is a free security service that protects your websites from spam and abuse.
Kyte - India's first AI powered SMS inbox
OOPSpam Anti-Spam API - The better, new standard to stop spam content.
Hiya - Know who's calling or texting and block spammers on Android