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 Booking Calendar - With the Appointment Booking Calendar you can accept online bookings from a set of available time-slots in the calendar.

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.

MakePlans - Online appointment booking - MakePlans

Lastpass - LastPass is an online password manager and form filler that makes web browsing easier and more secure.

Dudle - Dudle is an online scheduling application, which is free and open source.