Kajabi - Kajabi is the only Knowledge Commerce platform today with everything you need to market, sell, and deliver your knowledge online.

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets

Tendenci - Tendenci - The Open Source AMS is a cloud-based​ all-in-one management SaaS solution for Non-profits and Associations.

Attendize Event Ticketing - Attendize is a free & open-source ticket selling and event management platform

YourMembership - YourMembership provides membership management software integrated with social networking features.

pretix - pretix helps you to sell tickets for your event in an easy way. It supports multi-lingual events and provides a wide range of features