What is the name of this small company producing operating systems and programming languages, whose employee Kathleen O'Brien programmed the Atari Assembler Editor?
Atari Assembler Editor The Atari Assembler Editor is a cartridge-based development system used to edit, assemble, and debug 6502 programs for the Atari 8-bit family of home computers. It was programmed by Kathleen O'Brien of Shepardson Microsystems. It was the first commercially available assembler for the Atari 8-bit computers.
Darwin (operating system) Darwin is an open-source Unix operating system released by Apple Inc. in 2000. It is composed of code developed by Apple, as well as code derived from NeXTSTEP, BSD, Mach, and other free software projects.