GEOS

GEOS may refer to:

==Computer software== GEOS (8-bit operating system), an operating system originally designed for the Commodore 64 GEOS (16-bit operating system), a DOS-based graphical user interface and x86 operating system GEOS (securities processing software), an integrated online system for the management and processing of securities GEOS (software library), an open-source geometry engine Goddard Earth Observing System, an Earth system model