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OpenGEM showing hard disk and CD-ROM icons (to the right).
OpenGEM showing hard disk and CD-ROM icons (to the right)
Stable release
Preview release
Operating system DOS
Available in English
Type Windowing system
License GNU General Public License

OpenGEM is a non-multitasking 16-bit graphical user interface (GUI) for DOS. It is an extended distribution of FreeGEM that includes features of the original Digital Research GEM.

OpenGEM is intended to provide a simple to install and use GUI system and windowing framework for the FreeDOS operating system.

OpenGEM was developed by Shane Coughlan in collaboration with the FreeGEM Developer team, and is free software released under the terms of the GNU General Public License (GPL). OpenGEM versions 3 through 6 are hosted on SourceForge and on the FreeDOS website.

OpenGEM has not been actively developed since 2008 but is feature-complete as a basic GUI and includes a full SDK for future third party development or extension.


OpenGEM works with FreeDOS Beta 9 and above, DR DOS 5.0 and above, MS-DOS 3.3 and above, PC DOS 3.3 and above, and REAL/32, and DOSBox 0.65. OpenGEM will function on Windows 95, Windows 98, Windows 98SE, Windows Me. It is not known to work with Windows NT, Windows 2000 and Windows XP or above.

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