WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
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.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Konnecti - Konnecti is a matchmaker for local business.
Zulip - Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.
TeamSnap - Sports Team, Club & League Management Software & Apps