Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
CallApp - Free Caller ID & Call Blocker app that allows mobile users to block phone calls, identify calls, blacklist unwanted callers and much more.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
CallerSmart - CallerSmart is an application that is basically used for the purpose of looking up mystery phone numbers for free.