Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Beam.gg - An event platform where people can find esports events
Event Hunt - Startups and Tech Events Curated By Locals
Sliver.tv - Record, view, and stream top eSports games in VR
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
ScoreBreak - Basketball scoring software enabling automatic game film breakdown.