Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
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.
Event Hunt - Startups and Tech Events Curated By Locals
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
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.