If "BlackWin" implies a system that is impossible to break into, is the ultimate alternative.

Created by NTDEV, Tiny11 is perhaps the most famous lightweight modification of Windows 11. It removes almost everything—including Windows Update and Microsoft Edge—leaving only the bare essentials. It can run on as little as 2GB of RAM, making it a "hot" choice for those who want the newest features without the bloat. 2. AtlasOS

is a modified version of Windows specifically designed for ethical hacking and cybersecurity. It is often described as a "hacking toolkit" in the form of an operating system, pre-loaded with various tools for penetration testing and digital forensics.

: A fast, responsive Linux alternative to Windows 10/11 that is significantly "snappier" and efficient on older hardware.

It has a massive community. If you get stuck, there are thousands of tutorials available on the Kali Documentation site. 2. Parrot Security OS: The Daily Driver's Choice