Challonge - The Ultimate Source for Tournament Brackets
TeamSnap - Sports Team, Club & League Management Software & Apps
smash.gg - An esports platform empowering bottoms-up growth of competitive communities with value-add services...
Heja - Easily communicate within your sports team
Competize - Competize is a SaaS-based league and tournament management solution that offers deep fan engagement, live score management, software for scheduling, sponsor promotion, delegate administration, database in the cloud, and much more.
Sportlyzer - Sportlyzer is a player development and team management software for youth and amateur sports clubs. The platform connects coaches, managers, players and parents.