<P> Although the OSI definition of "open source software" is widely accepted, a small number of people and organizations use the term to refer to software where the source is available for viewing, but which may not legally be modified or redistributed . Such software is more often referred to as source - available, or as shared source, a term coined by Microsoft in 2001 . While in 2007 two shared source licenses were certified by the OSI, most of the shared source licenses are still source - available only . </P> <P> Open - sourcing is the act of propagating the open source movement, most often referring to releasing previously proprietary software under an open source / free software license, but it may also refer programing Open Source software or installing Open Source software . </P> <P> Notable software packages, previously proprietary, which have been open sourced include: </P> <Ul> <Li> Netscape Navigator, the code of which became the basis of the Mozilla and Mozilla Firefox web browsers </Li> <Li> StarOffice, which became the base of the OpenOffice.org office suite and LibreOffice </Li> <Li> Global File System, was originally GPL'd, then made proprietary in 2001 (?), but in 2004 was re-GPL'd . </Li> <Li> SAP DB, which has become MaxDB, and is now distributed (and owned) by MySQL AB </Li> <Li> InterBase database, which was open sourced by Borland in 2000 and presently exists as a commercial product and an open - source fork (Firebird) </Li> </Ul>

A commercial software production is typically uses open source code