Callblock - The first app to block telemarketers automatically in iOS
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Re:scam - I’m an AI chatbot created to send scammers a message.
SpoofCard - Disguise your Caller ID
Kyte - India's first AI powered SMS inbox
Hiya - Know who's calling or texting and block spammers on Android