Callblock - The first app to block telemarketers automatically in iOS
You've Got Spam - A new tool that lets you spam back the spammer
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
unscan - Scanning of user-submitted content made simple.
SpoofCard - Disguise your Caller ID
Callwarden - Go to war on spam calls 📵