What are some alternatives?
BookSteam - BookSteam Online booking and appointment scheduling software for businesses worldwide. Easy to use, cloud based web scheduler that includes class and group bookings. Calendar management and schedule organization, trusted by thousands.
Redmine - Flexible project management web application
MINDBODY - Find and book fitness and beauty classes near you.
Teamwork Projects - The Project Management App for Professionals. The most powerful and simple way to collaborate with your team.
Reservio - Reservio is a simple online booking and appointment scheduling application.
Basecamp - A simple and elegant project management system.