this post was submitted on 31 Aug 2026
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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iirc the Linux kernel dropped support for pre-Pentium x86 in the last few years, so any distro with 486 support now would be using an unmaintained kernel.
I think if you want a maintained operating system for your 486 today, NetBSD is probably the thing to run.
https://ostechnix.com/linux-kernel-ends-486-support/
I am surprised to learn it was May of last year, with the 6.15 kernel being the first to drop 486 support and the 386 family dropping out back in 2012.
After a touch more research to figure out what the oldest currently-supported computers would be: I also hadn't realized the first Pentium debuted in 1993. Pentium and compatibles are still operable, so there are maintained distros out there like Tiny Core Linux that will work on computers made 33 years ago. Just amazing.