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Events on Sunday 25 August 1991 1
1991Linus Torvalds Releases the Linux KernelFree operating system kernel posted for public useFinnish student Linus Torvalds announced a free Unix-like operating system kernel he had been developing, posting the source code for public collaboration. What began as a hobby project grew into Linux, which underpins most of the world's servers, smartphones, and cloud infrastructure today. It became one of the largest collaborative software projects in history.