Among the operating systems certified as UNIX are massive mainframe operating systems like IBM®'s AIX® as well Apple®'s macOS® desktop operating for their MacBook® and iMac® lineup. UNIX® was originally a research operating system developed at AT&T's Bell Labs.® It has evolved today into a set of operating systems standards, called POSIX® overseen by the IEEE®, and official sets of certification that can be obtained by companies for their commercial operating systems, through a process administrated by The Open Group®.
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Disambiguation: AT&T UNIX®, UNIX® Certification, UNIX®-Like, and Linux® They exist on a continuum that includes certified UNIX®, open source projects descended from the original AT&T UNIX®, and Unix-like projects designed to be Unix-compatible. These operating systems and applications built on them underpin most of modern computing, from the mobile devices in your pocket to mainframes that perform climate change analysis. The ideas behind UNIX®, a research operating system from AT&T in the 1960s, have evolved to form a set of core computer science principles around which dozens of operating systems are built. The greatest operating system ever invented you have probably never heard about whose genius design ideas now enable everything great you love.
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This project is not affiliated with, sponsored, or endorsed by The Open Group. This list also contains resources for UNIX standards, programming, communities, and free software. This list is an exploration of the world of UNIX®, including UNIX history, the relevance of UNIX today, and lists select awesome UNIX and UNIX-like projects. Unix/*NIX Disambiguation UNIX History "Unix Philosophy" Introductory UNIX® Skills Introductory Programming Skills C Language and Derivatives Other Programming Languages UNIX® Code/Emulation UNIX®/POSIX® Technical Standards Community Free Software and Open Source Movements UNIX®/Linux®-Related Trade Groups Notable Historic UNIX® and Unix®-like Operating Systems More macOS® More illumos® More BSD More Linux® UNIX and Unix-Like Hardware Vendors Intellectual Property Notices README.md Linux® *NIXes Certified UNIX® Operating Systems ? Get More macOS AT&T UNIX®-Derived Operating Systems Get More BSD UNIX®-Certified Linux-Based Operating Systems Get More UNIX® Linux® Most Unix®-Like Engineered Linux Distributions Popular Commercial Linux® Distributions Popular Non-Commercial Linux® Distributions Mobile Linux® Distributions Unique Linux® Distributions/Related Projects Embedded/IoT-Focused Linux® Distributions Get more Linux Other Unix®-Like Operating Systems iOS illumos Get More illumos GNU Hurd More Unix-Like Operating Systems Plan 9 Derivatives Unix-like Real Time Operating Systems Additional Resources More UNIX® UNIX® v. Awesome UNIX® Contents Frequently Asked Questions What is UNIX®? Why is UNIX® relevant today? Disambiguation: AT&T UNIX®, UNIX® Certification, UNIX®-Like, and Linux® Commercial UNIX® "Unix Philosophy" AT&T UNIX®-Derived Descendants, e.g FreeBSD® Unix®-Like Operating Systems, e.g.