Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.

WhosCall - WhosCall is a reliable caller ID app whose popularity has led to its adoption by many users including international media. You can now manage the numbers calling you regardless of whether they are part of your contact list or not... read more.

Callwarden - Go to war on spam calls 📵

Should I Answer? - See what phone numbers are most searched and find ratings and users reviews.

You've Got Spam - A new tool that lets you spam back the spammer

CallerSmart - CallerSmart is an application that is basically used for the purpose of looking up mystery phone numbers for free.