You can allow Mentors to create their contents and charge them a percentage of the content price. The payment will be split between you and the mentor using PayPal's adaptive payment in real time. The system also have PayUMenoy integrated for Indian customers.
This application do a lot. A complete package for your business that will help you to create FLOWCHARTS and GRAPHS, manage your leads, inventories, events, accounts, deals and invoices.
MinorSchool LMS is a complete e-learning management system. You can create courses and start selling the courses online with a nicely design front end and full featured dashboard, PayPal API is integrated.
Full Stock is an warehouse management application. If you have to manage multiple inventories and warehouses then this application will help you to make your job easy.