The Mono Visual Basic.NET compiler (vbnc) allows developers to continue to code in their preferred Visual Basic/Visual Studio environment and compile and run that same code base on a variety of operating systems and architectures, including Windows, Linux, and Mac OS.
A complete runtime for running Visual Basic.NET applications on Mono was contributed by Mainsoft (http://www.mainsoft.com) in Java and has been ported to C#.
This allows applications compiled using Microsoft's Visual Basic.NET compiler to run on Mono.