..NET Core is a free and open-source managed computer software framework for the Windows, Linux, and macOS operating systems. .NET Core fully supports C# and F# and partially supports Visual Basic .NET. Currently VB.NET compiles and runs on .NET Core, but the separate Visual Basic Runtime is not implemented. Microsoft announced that .NET Core 3 would include the Visual Basic Runtime. As of October 2018, C++/CLI is not yet supported, although support is planned on Windows.