One of the aspects we have to work around building and improving a dynamic language implementation on the Java Virtual Machine is the way the JVM loads and executes bytecode. In order for JRuby to take advantage of the Hotspot just-in-time (JIT) compiler,
The following is a list of programming languages for the Java virtual machine aside of Java itself. Currently (spring 2005), it comprises close to 200 different systems. It is a mix of experimental, research oriented implementations and of commercial ones