Number Guru - Number Guru is an application for smartphone users for the purpose of reverse phone and caller lookup system.
MaskMyNumber - Fake your Caller ID and Mask your Number
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Bad Numbers - A reverse telephone lookup of unwanted 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.
SpoofCard - Disguise your Caller ID