There’s a freeware that I like that is distributed with clickonce. But that is totally depending on the developer server, which might disappear at any time, there’s a way to download the files for archival/offline install?
What is click once?
It’s an outdated way to run .net windows apps from the browser without an installer
During the windows XP era Microsoft tried to push it by saying in this way you can send and install updates automatically without the user interaction (or consent) but it failed I think mostly because it needed an expensive certificate
ClickOnce is a component of Microsoft .NET Framework 2.0 and later, and supports deploying applications made with Windows Forms or Windows Presentation Foundation. It is similar to Java Web Start for the Java Platform or Zero Install for Linux.