SnapCalendar.io's answer:
A clean, intuitive interface that simplifies scheduling and management tasks.
ManageEngine RecoveryManager Plus - RecoveryManager Plus is one such enterprise backup solution which has the ability to easily backup and restores both the domain controllers and virtual machines.
Appointment Reminder - Automated SMS/Voice and Email Reminders.
Heroku Enterprise - Heroku Enterprise is a flexible IT management for developers that lets them build apps using their preferred languages and tools like Ruby, Java, Python and Node.
Reservio - Reservio is a simple online booking and appointment scheduling application.
Lastpass - LastPass is an online password manager and form filler that makes web browsing easier and more secure.
Square Appointments - Add an online booking link. Easily embed the customizable widget directly on your website. Any changes to your online scheduling, prices, or services update automatically.