How does Parrot compare to other virtual machines?

Question

Parrot is the virtual machine originally designed for Perl 6.

What technical capabilities does the Parrot VM offer that competing virtual machines such as the Java Virtu

Answer 1

One other thing that makes Parrot different from most VMs (certainly different from the JVM), is that it's a register machine rather than a stack machine. But I think people will be arguing for a long long time whether that can be called an advantage or a disadvantage.