Open Workbench was originally released by Niku in 2004 as an open-source project-management package. When Niku was bought by Computer Associates (2005), the open-source activities, as well as the Clarity PPM solution, were taken over by CA. Open Workbench is available in English, French, and German for the Windows operating system only. This package can be used as a stand-alone desktop planning tool or as an integrated element of Clarity, the company-wide PPM solution from Computer Associates.