I was always interested in OS alternatives to DOS/Windows back in the day. I had heard about GeoWorks (GEOS) back in the early 90s and thought it sounded interesting. I never used it myself though.. It seemed like Microsoft took over the market, with several competitors existing back in the day. I saw this
article about GeoWorks today:
https://tedium.co/2019/06/20/geoworks-geos-history/
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