Mevo by Livestream - The live event camera

Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.

Facebook Live - Connect with public figures through live video

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets

Superpeer Channels - Beautiful livestreams with your subscribers

Bigtent - BigTent is a web-based organization and communication portal for groups.