There are many alternatives to Windows 11 for Windows if you are looking for a replacement. 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 Windows 11 and 13 are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Windows 11 are Windows 10, ReactOS, Revision (ReviOS) and AtlasOS.
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.
Versatile OS with universal app architecture, free first-year offer for Windows 7 and 8.1 users, redesigned mouse-touch UI, virtual desktop, Microsoft Edge, upgraded security, and enhanced graphics for gaming, supporting fingerprint and face recognition login.
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).
ReviOS aspires to re-create what Windows as an operating system should have been - easy and simple.
An open and transparent modification of the Windows operating system, designed to optimize performance and latency. AtlasOS is creating a "kinder" Windows experience. Reducing bloatware and optimizing performance for enthusiasts, gamers, and privacy-conscious individuals.
Windows X-Lite's Optimized Windows Builds are designed to Enhance Performance, Privacy, Stability and Control, and work with all Apps and Games on all PCs. Old or New, Weak or Strong, Desktop or Laptop.
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.
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it is pretty stable, has enough software packages, many online tutorials works on its .deb/apt. Forum is OK, Bug tracker system outdated. I am considering no longer using KDE desktop on it, due to a longer term issues with it, even its UI is really good.