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.
CoachHippo - The ultimate membership management tool for managing your club, nonprofit and organisation. Collect payments online. - Get started for free!
Bylde - Bylde is a SaaS platform you can use to Start, Manage and Grow your groups and communities.
LeagueAthletics.com - LeagueAthletics.com is a user-friendly sports management software, making you build a sports website, create pages, and manage content with minimal effort.
SportEasy - SportEasy is an awesome app to communicate with your team and organize your games and practices...