'Open' once used to mean something else. Example 'Open VMS' from DEC. It was not open source, but developed to support 'open' standards, etc. See also 'OpenWin

'Open' once used to mean something else. Example 'Open VMS' from DEC. It was not open source, but developed to support 'open' standards, etc. See also 'OpenWindows' from Sun, 'Open Genera' from Symbolics, X/Open, Open Software Foundation, ...