The Mono developers would be certain to agree with that 
sentiment. Though the effort to create an open-source .NET 
implementation has been running more quietly since the initial 
surge of hype faded away, the Mono developers have significant 
progress to report. The Mono users gathering at PDC will showcase 
Ruby.NET and PHP.NET compilers; a new ASP.NET editor; a .NET bug 
finder; and the Mono project's XAML compiler, among other tools.