A next generation virtual machine VM for Ruby, uses best VM and dynamic language implementation research and technology of last 30 years; core libraries are in Ruby, makes system more accessible, easier to develop and extend. Open source, BSD.

Goal: greatly reduce execution time of Ruby programs, be fastest Ruby VM.

Kevin Tew, Cardinal creator and project director explains project motives, direction, progress.

Ruby interpreter for Parrot dynamic multilanguage bytecode VM; links, instructions.

Goal: implement Ruby's internals in Ruby; will use ruby2c to convert itself to C and bootstrap a new Ruby binary; to be fully compatible with (standard) Ruby.

Comparison with text, tables, graphs, many reader comments. Zen and the Art of Ruby Programming.

Evan Phoenix, Rubinius creator and project director explains project motives, direction, progress.