This is the Mono Visual Basic.NET Compiler (vbnc), aimed at the specifications / features of the Visual Basic 2005 compiler. A platform-independent compiler which produces executable CIL (Common Intermediate Language) binaries. This compiler targets the CLI (Common Language Infrastructure) 2.0 runtime version. . Mono is a platform for running and developing applications based on the ECMA/ISO Standards. Mono is an open source effort led by Novell. Mono provides a complete CLR (Common Language Runtime) including compiler and runtime, which can produce and execute CIL (Common Intermediate Language) bytecode (aka assemblies), and a class library.