"GNU" is 'n rekursiewe akroniem vir "GNU's Not Unix!" (Engels, GNU is nie Unix nie).[11][14] Die akroniem is gekies omdat die ontwerp van GNU soortgelyk is aan dié van Unix, maar van Unix verskil deurdat dit vrye sagteware is en geen Unix-bronkode bevat nie.[11][3][15]
Die GNU-projek sluit 'n bedryfstelselkern, GNU Hurd, in, wat die oorspronklike fokus van die Free Software Foundation (Engels, Vrye Sagteware-stigting; FSF) was.[11][16][17][18] Aangesien Hurd se kern nog nie produksiegereed is nie,[19] word nie-GNU-kerne, byvoorbeeld die Linux-kern, met GNU-sagteware gebruik.[20][21] Die kombinasie van GNU-sagteware met die Linux-kern is so algemeen dat dit algemeen na verwys word as slegs Linux, en minder algemeen as GNU/Linux.
Richard Stallman, stigter van die GNU-projek, beskou GNU as 'n "tegniese middel tot 'n sosiale doeleinde".[22] Lawrence Lessig skryf in sy voorwoord tot die tweede uitgawe van Stallman se boek Free software, free society dat Stallman daarin oor "die sosiale aspekte van sagteware en hoe vrye sagteware gemeenskap en sosiale geregtigheid kan skep" skryf.[23]
↑ 3,03,1"What is GNU?". The GNU Operating System (in Engels). Free Software Foundation. 4 September 2009. Geargiveer vanaf die oorspronklike op 13 Mei 2020. Besoek op 9 Oktober 2009. The name 'GNU' is a recursive acronym for 'GNU's Not Unix'; it is pronounced g-noo, as one syllable with no vowel sound between the g and the n.
↑(en) Yi Peng; Fu Li; Ali Mili (Januarie 2007). "Modeling the evolution of operating systems: An empirical study"(PDF). Journal of Systems and Software. 80 (1): 1–15. doi:10.1016/j.jss.2006.03.049. Geargiveer vanaf die oorspronklike(PDF) op 9 Mei 2009. Besoek op 11 Januarie 2016. ...we have selected a set of fifteen operating systems: Unix, Solaris/Sun OS, BSD, Windows, MS-DOS, MAC OS, Linux, Net Ware, HP UX, GNU Hurd, IBM Aix, Compaq/ DEC VMS, OS/2.
↑Snom Technology. "Source Code & GPL Open Source". www.snom.com (in Engels). Geargiveer vanaf die oorspronklike op 9 April 2018. Besoek op 8 April 2018. Variants of the GNU operating system, which use the kernel Linux, are now widely used; though these systems are often referred to as "Linux", they are more accurately called "GNU/Linux systems".
↑"GNU Operating System - CCM FAQ". CCM (in Engels). Geargiveer vanaf die oorspronklike op 15 Desember 2019. Besoek op 8 April 2018. GNU is an operating system that offers a set of free open source programs.
↑ 11,011,111,211,3(en) St. Amant, Kirk; Still, Brian (2007). Handbook of Research on Open Source Software: Technological, Economic, and Social Perspectives. ISBN978-1-59140999-1.
↑"GNU Manifesto". GNU project (in Engels). FSF. Geargiveer vanaf die oorspronklike op 11 Mei 2020. Besoek op 27 Julie 2011.
↑(en) Vaughan-Nichols, Steven J. "Opinion: The top 10 operating system stinkers", Computerworld, 9 April 2009: "... after more than 25 years in development, GNU remains incomplete: its kernel, Hurd, has never really made it out of the starting blocks. ... Almost no one has actually been able to use the OS; it's really more a set of ideas than an operating system."
↑(en) Lessig, Lawrence. The Future of Ideas: The Fate of the Commons in a Connected World, p. 54. Random House, 2001. ISBN 978-0-375-50578-2. Oor Stallman: "He had mixed all of the ingredients needed for an operating system to function, but he was missing the core."