Berkely Softworks

Berkely Softworks was a company known for developing GEOS, first for the Commodore 64 and Apple II and for x86 PCs in 1990. Also in 1990, Berkely Softworks rebranded to GeoWorks.

GEOS
More information on GEOS here

In 1986, Berkely Softworks released GEOS, an 8-bit operating system for the Commodore 64/128 and Apple II. It very closely resembled early versions of Mac OS and was the third most popular microcomputer OS for a period of time. In 1990, another version of GEOS was released which was 16-bit.

Geoworks
In 1990, Berkely Softworks renamed itself to Geoworks. Its main product was Geoworks Ensemble, the Geoworks system for 16-bit x86 PCs. In 2003, Geoworks was taken over by an investor from Texas.