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.
Spond - The easiest way to organize team sports or other type of group activities
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Sportlyzer - Sportlyzer is a player development and team management software for youth and amateur sports clubs. The platform connects coaches, managers, players and parents.
Bylde - Bylde is a SaaS platform you can use to Start, Manage and Grow your groups and communities.