A lot of history - Free software is flexible

• Done with GNU Classpath:

  • Compiling Java source » stand-alone executable
  • Compiling Java bytecode » CIL (bytecode of .NET)
  • Operating Systems with type-safe kernels
  • JVM for multiprocessor clusters (128 CPUs, Myrinet)
  • Embedded systems with real-time guarantees
  • Alternative access to native system/libs (non-JNI)