“Open Cobalt Alpha is the first step in a long term project to make available a free and open source platform for constructing, accessing, and sharing hyperlinked virtual workspaces for research and education. The technology is being designed to make it easy to create highly capable and interlinked multi-user virtual workspaces, virtual exhibit spaces, and game-based learning and training environments that run on all major software operating systems.” ( Open Cobalt home page, retrieved April 11, 2010)
“Croquet is a powerful open source software technology that, in the form of the Croquet Software Developer's Kit (Croquet SDK), can be used by experienced software developers to create and deploy deeply collaborative multi-user online virtual world applications on and across multiple operating systems and devices. Derived from Squeak, the Croquet system features a peer-based messaging protocol that dramatically reduces the need for server infrastructures to support virtual world deployment and makes it easy for software developers to create deeply collaborative applications.” (Croquet consortium home page, retrieved April 11, 2010).
OpenCobalt Uses, retrieved April 11, 2010.]