Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Google - Google Search, also referred to as Google Web Search or simply Google, is a web search engine developed by Google. It is the most used search engine on the World Wide Web
CallApp - Free Caller ID & Call Blocker app that allows mobile users to block phone calls, identify calls, blacklist unwanted callers and much more.
Dialer One - CyburDial: Revolutionizing Connections, Empowering Conversations with and Artificial Intelligence driven Dialer.
CallerSmart - CallerSmart is an application that is basically used for the purpose of looking up mystery phone numbers for free.
Rolo - The contact manager that you will actually use every day.