Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
unscan - Scanning of user-submitted content made simple.
Hiya - Know who's calling or texting and block spammers on Android
You've Got Spam - A new tool that lets you spam back the spammer
Credo360 - Figure out who to trust by looking at a social credit score
Callwarden - Go to war on spam calls 📵