Online .NET IDE? [closed]

Does anyone know of a (free?) web-based IDE for .NET development online?

Is .NET discontinued?

NET Framework versions 4.5. 2, 4.6, and 4.6. 1 ended on April 26, 2022, so security fixes, updates, and technical support for these versions will no longer be provided.

Which IDE is used in .NET Framework?

In the context of . NET-based applications, Visual Studio is the most commonly used IDE.

Is Rider IDE free?

Rider includes an evaluation license key for a free 30-day trial.

Is .NET deprecated?

NET Framework will be deprecated. This means you can only use . NET Framework as long as your operating systems (for example Windows Server 2019) still supports it. And with Microsoft shortening its support lifecycles, your operating system end-of-life will come sooner than you may think.

There's CodeRun for ASP.NET/PHP/Ajax apps.