Windows has had `winget` as a central package manager for a while now. It works great!
It's also worth noting that all of Winget's code was initially taken from AppGet, without much recognition.[1] Apparently Microsoft cared just enough about that detail to mention the project they forked in passing, as part of a list of third-party package manager projects for Windows.[2] This is why, IMO, you should always first consider a copyleft license for an open source project.
[1] https://www.theverge.com/2020/5/28/21272964/microsoft-winget...
[2] https://devblogs.microsoft.com/commandline/windows-package-m...
EDIT: fixed vertical spacing.
Do many third parties use it?