Websites that provide a C# or Java development environment? [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help开发者_如何学Python center. Closed 11 years ago.

I'm searching for a website that provides a development envirment for C# or Java programing.

Are you familiar with one?

Please add known bugs that you aware of,and for C#:for what VS version is that equivalent?

Thanks!

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Java Integrated Development Environments (IDEs) and Editors

Open Source IDEs in C#