Based on QEMU, UTM is a free, open-source app that allows you to run Windows, Linux, and even older versions of macOS on modern Macs.
Searching for activation keys on GitHub puts your Mac’s security at risk. For a stable and secure experience, stick to the official trial or explore high-quality free alternatives like VMware Fusion or UTM. parallels desktop activation key github link
If the cost of Parallels is a barrier, there are open-source and free virtualization tools that are safe and legal to use: Based on QEMU, UTM is a free, open-source