Rubinius is an implementation of the Ruby programming language. Rubinius aims to be compatible with Ruby version 2.1.

Rubinius includes a Ruby parser, bytecode virtual machine, bytecode compiler, generational garbage collector, and just-in-time (JIT) native machine code compiler. Rubinius uses native OS threads with no global interpreter lock. Rubinius also provides C-API compatibility for native C extensions.

The Ruby core library is written almost entirely in Ruby. Rubinius tools, such as the bytecode compiler and debugger, are also written in Ruby. Rubinius provides the same standard libraries as Matz's Ruby implementation (MRI) with the following exceptions:

• Continuation
• Ripper
• TracePoint
• Tracer

Rubinius runs on Mac OS X and many Unix/Linux operating systems. Microsoft Windows is not yet supported.

Most popular Ruby applications, like Rails, run on Rubinius.

To install Rubinius, use the following steps:

1. Ensure that MRI 2.0+, rubygems, rake, and git are installed
2. git clone git://github.com/rubinius/rubinius.git
3. cd rubinius
4. bundle
5. ./configure --prefix=/path/to/install/dir
6. rake

When the install process finishes, follow the directions printed to the terminal to add the Rubinius executable (bin) directory to your PATH.

Rubinius comes with RubyGems built-in. To install a gem, run the following:

rbx -S gem install <gem_name>

The following features of Ruby/MRI are currently not (yet) supported by Rubinius:

• Keyword arguments (rubinius#2669)
• Refinements
• $SAFE levels

After installing Rubinius, run 'rbx docs' to access the built-in documentation at any time.

Please file tickets for bugs or problems. The issue tracker is:

http://github.com/rubinius/rubinius/issues

The Rubinius team welcomes contributions. For more information read the CONTRIBUTING file in the root directory of Rubinius.

Rubinius uses the BSD license. See LICENSE for details.