GNU General Public License
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The GNU General Public Licenses are a series of widely used free software licenses. The GPL is a copyleft license, which means that it guarantees end users the freedom to run, study, share, or modify
Richard Stallman at the launch of the first draft of the GNU GPLv3 at MIT in Cambridge, Massachusetts, United States. To his right is Columbia University law professor Eben Moglen, chairman of the Software Freedom Law Centre.
Printed GPL statements for consumer entertainment devices that incorporate GPL components
Linux kernel
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The Linux kernel is a free and open-source Unix-like kernel that is used in many computer systems worldwide. The kernel was created by Linus Torvalds in 1991 and was soon adopted as the kernel for the
GNU General Public License
…most popular software licenses in the free and open-source software (FOSS) domain. Prominent free software programs licensed under the GPL include the Linux operating system kernel and the GNU Compiler Collection (GCC). David A. Wheeler argues that the copyleft provided by the GPL was crucial to the success of Linux-based systems…
Linus Torvalds at the LinuxCon Europe 2014
Linux kernel panic output
An iPod booting iPodLinux
Sankey diagram of Linux Kernel Source Lines of Code