CassiniDev – Portable ASP.NET Web Server
An open source portable, simple & lightweight ASP.NET web server. Supports .NET Framework 4.8.
The ASP.NET version of XAMPP, WampServer, etc.
If you wish to get the original untouched version of source code from the old repository hosted at Codeplex, you may download it at the Release: CassiniDev Codeplex Edition, or at the CassiniDev CodePlex Archive site