RedDwarf Server is an open source middleware solution for developing the server-side of massively multiplayer online games. It is the official community fork of Project Darkstar, an open source project that was supported until 2010 by Sun Microsystems. Upon Oracle's acquisition of Sun, support for Project Darkstar was stopped. To continue development of the project, the community rebranded the latest codebase of Project Darkstar's repositories and released it as RedDwarf Server.