Number Guru - Number Guru is an application for smartphone users for the purpose of reverse phone and caller lookup system.
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.
Callwarden - Go to war on spam calls 📵
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.
Castle - The easiest way to protect your users from getting hacked