Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform
TeamSnap - Sports Team, Club & League Management Software & Apps
Ticket19 - Sell tickets for your events with minimal transaction fees.
Team App - Team App is a platform that allows teams and groups to improve communication by creating their very own smartphone app.
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
Jersey Watch - Jersey Watch is sports management software specially designed for the teams and leagues for organizing players, managing payments, and effective communication.