ReactOS is a free and open-source operating system for x86/x64 personal computers intended to be binary-compatible with computer programs and devices. Developed by Aleksey Bragin
License: Open Source
ArchBang is a lightweight Linux distribution that offers a rolling release model and is highly customizable, making it ideal for experienced users. In contrast, ReactOS is a Windows-compatible operating system aimed at running Windows applications, appealing to users transitioning from Windows but facing limitations in terms of stability and native application support.