CS-Cart Multi-Vendor - On-premises eCommerce marketplace builder
Kajabi - Kajabi is the only Knowledge Commerce platform today with everything you need to market, sell, and deliver your knowledge online.
VipeCloud - Forecast Automation. Sales, Pipeline, and Campaigns all in one product - a CRM replacement.
Tendenci - Tendenci - The Open Source AMS is a cloud-based all-in-one management SaaS solution for Non-profits and Associations.
Sendlane - Marketing automation and campaign management solution
YourMembership - YourMembership provides membership management software integrated with social networking features.