Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
TeamSnap - Sports Team, Club & League Management Software & Apps
Galette - Galette is a membership management web application towards non profit organizations.
ACTIVE JumpForward - JumpForward serves over 150,000 users and 175 college athletic departments with recruiting and camp management software built to keep you compliant.
Bigtent - BigTent is a web-based organization and communication portal for groups.
SportsSignupPlay - SportsSignupPlay is one of the leading team & league management system that lets schedule calendars, communication, Roaster, and many others, making the coaches connect with you sports families.