Linux kernel
Operating system
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The Linux kernel is a free and open-source, monolithic, modular, multitasking, Unix-like operating system kernel. It was originally written in 1991 by Linus Torvalds for his i386-based PC, and it was soon adopted as the kernel for the GNU... Wikipedia
Programming languages: C, Rust, Assembly language, and more
Initial release date: September 17, 1991