Which company was founded by Gary Kildall to develop the CP/M operating system?

Which company was founded by Gary Kildall to develop the CP/M operating system? Digital Research. Gary Kildall and his wife, Dorothy McEwen Kildall, established the company in 1974, originally under the name Intergalactic Digital Research. It later became Digital Research, Inc., the business that marketed and developed CP/M.

CP/M—originally Control Program/Monitor—was designed for early microcomputers using processors such as the Intel 8080 and Zilog Z80. Kildall’s operating system became a de facto standard because it could be adapted to different hardware through a hardware-abstraction layer known as the BIOS. Digital Research went on to produce related systems including MP/M, CP/M-86, Concurrent DOS, and DR-DOS.

A common mix-up is naming Microsoft, because MS-DOS ultimately became the dominant operating system on IBM-compatible personal computers. Digital Research was instead the company behind CP/M and later competed directly with Microsoft. IBM considered CP/M for its PC, but the deal did not become the commercial success Digital Research hoped for. Novell acquired Digital Research in 1991.