Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
TeamLink - TeamLink is one of the leading and sumptuous solutions that is making web and video meetings extremely easy and efficient.
Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
Google Duo - Google's answer to Facetime, high-quality video calling on iOS and Android.
pretix - pretix helps you to sell tickets for your event in an easy way. It supports multi-lingual events and provides a wide range of features
Around - Find people to hang out with.