TeamSnap - Sports Team, Club & League Management Software & Apps
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Heja - Easily communicate within your sports team
Event Hunt - Startups and Tech Events Curated By Locals
Sportlyzer - Sportlyzer is a player development and team management software for youth and amateur sports clubs. The platform connects coaches, managers, players and parents.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets