Because of the Commons clause, the license of WorkAdventure is not considered OSI compliant. Still, the source code is available and you retain most of the advantages of a classical open-source license.
The commons clause (or other similar restrictions) is used by other projects (like Neo4J or Redis). We use it to avoid cloud providers to take advantage of the work performed on WorkAdventure, by selling subscriptions to the product themselves.
At WorkAdventure, we believe in the ideal of Open Source software. Our goal is to keep WorkAdventure as open as possible and to grow a vibrant community!