Opentute - Opentute helps businesses to effortlessly launch a private eLearning and communication platform to engage teams and clients.

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

BuddyBoss - BuddyBoss is the open-source software that helps you to build a website on WordPress and offers you the training, courses, and various programs to learn about website development.

MakePlans - Online appointment booking - MakePlans

Miestro - Miestro is the all-in-one platform that is used to develop and sell online training, master classes, and courses.

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