TeamSnap - Sports Team, Club & League Management Software & Apps
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Sports Bridge - Find a sports team for your child
Ticket Tribe - Sell tickets online with no fees per ticket
SportsEngine - SportsEngine is an online platform that helps users in finding youth sports programs or articles or news on different sports.
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