Kajabi - Kajabi is the only Knowledge Commerce platform today with everything you need to market, sell, and deliver your knowledge online.
BOINC - BOINC is an open-source software platform for computing using volunteered resources
Tendenci - Tendenci - The Open Source AMS is a cloud-based all-in-one management SaaS solution for Non-profits and Associations.
Apache Mesos - Apache Mesos abstracts resources away from machines, enabling fault-tolerant and elastic distributed systems to easily be built and run effectively.
YourMembership - YourMembership provides membership management software integrated with social networking features.
JPPF - The open source grid computing solution.