Unix
Operating system
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Unix is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. Wikipedia
Programming languages: C and Assembly language
Developer: Ken Thompson, Nokia Bell Labs, Dennis Ritchie, and more
Initial release date: November 3, 1971
Awards: Turing Award
License: Proprietary software, Freeware, and Open-source license
Default user interface: Command-line interface and Graphical (Wayland and X Window System; Android SurfaceFlinger; macOS Quartz)