ntdevlabs / tiny11builder

WinUI app that builds smaller, customized Windows 11 ISO images from an official or user-supplied Windows image.

ChrisTitusTech / winutil

PowerShell utility that installs common Windows programs and applies system tweaks, fixes, and Windows Update settings from one GUI.

reactos / reactos

An open-source, Alpha-stage operating system that aims for binary and driver compatibility with Windows NT-family applications.

microsoft / WSL

Runs Linux command-line tools and applications unmodified directly on Windows, without a traditional virtual machine or dual boot.