Believe it or not you can use Microsoft's Visual Studio Code from your web browser, or at least, versions of it.

If you have an existing web application, open it in Visual Studio Code (preferably copying it to a new development branch) and then use the PWA Studio tools to convert it into a PWA.

Microsoft recommends replacing relic from old .NET Framework with Blazor, but you can still do ASP.NET Web Forms apps in Visual Studio 2022 if you want to, with a couple tweaks.

Developers at companies and organizations of all sizes use Visual Studio to create and test their code before moving it into their code repositories, which are likely on Microsoft’s GitHub.