CallApp is a Free Caller ID and Call Blocker app that allows mobile users to block phone calls, identify telemarketing calls, record phone calls, blacklist unwanted callers and much more. CallApp is one of the most comprehensive caller ID apps with the ability to identify over a billion unknown callers and update your contacts with full info from social media platforms.
PhoneTray - Block an unlimited number of phone calls using USB voice/data/fax/caller-id dial-up modem.
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Call Station - CallStation is computer answering machine, phone dialer, and Caller ID software.
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.
SmartCallMonitor - SmartCallMonitor automatically matches caller data with existing Outlook contacts and displays them.
CallerSmart - CallerSmart is an application that is basically used for the purpose of looking up mystery phone numbers for free.