Visual Basic 2005 runtime libraries for Mono This package contains the Mono Visual Basic runtime library, aimed at the specifications / features of the Visual Basic 2005. 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.