Boo looks like an interesting language, but it appears to be implemented only for the Common Language Infrastructure (CLI), AKA .NET -- at least, I haven't found any other implementation, and I'd especially like one for the JVM, if it exists. So, I thought I'd double check on Stack Overflow -- ARE there any non-CLI implementations of Boo?
Yes there is. Check out the boojay project, it emits java bytecode.