Puppy Linux is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The best Windows alternative is Debian, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Puppy Linux and 13 are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Puppy Linux are ReactOS, Windows 11, HoloISO and Damn Small Linux.
The Debian Project is an association of individuals who have made common cause to create a free operating system. This operating system that we have created is called Debian.
ReactOS™ is a FOSS effort to develop a quality operating system based on the architecture of Microsoft® Windows™ NT family of operating systems, that is compatible with applications and drivers written for it (NT4, 2000, XP, 2003, Vista, 7).
Experience the latest Windows OS with a new Start menu, integrated Teams, and gaming technologies like Auto HDR. Improved security with stricter requirements enhances protection, and seamless Microsoft Account integration makes it ideal for modern devices.
DebianDog is very small Debian Live CD shaped to look and act like Puppy Linux. Debian structure and Debian behaviour are untouched and Debian documentation is 100% valid for DebianDog. You have access to all debian repositories.
MINIX is a POSIX-compliant Unix-like operating system based on a tiny microkernel running in kernel mode with the rest of the operating system running as a number of isolated, protected, processes in user mode.
illumos is a free and open-source Unix operating system. It derives from OpenSolaris, which in turn derives from SVR4 UNIX and Berkeley Software Distribution (BSD). illumos comprises a kernel, device drivers, system libraries, and utility software for system administration.
The Zeal Operating System is a modernized, professional fork of the 64-bit Temple Operating System. Guiding principles of development include transparency, full user control, and adherence to public-domain/open-source implementations.
Xinuos OpenServer™ 10 is a 64-bit operating system based on the popular FreeBSD and designed to support business applications within an enterprise environment.
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Much harder to use and less versatile than Puppy. Also community not as friendly or helpful.