IronRuby

IronRuby is an implementation of the Ruby programming language targeting Microsoft .NET framework. It is implemented on top of the Dynamic Language Runtime (DLR), a library running on top of the Common Language Infrastructure that provides dynamic typing and dynamic method dispatch, among other things, for dynamic languages.

The project is currently inactive, with the last release of IronRuby (version 1.1.3) being in March 2011.

On April 30, 2007, at MIX 2007, Microsoft announced IronRuby, which uses the same name as Wilco Bauwer's IronRuby project with permission. It was planned to be released to the public at OSCON 2007.

On July 23, 2007, as promised, John Lam and the DLR Design Team presented the pre-Alpha version of the IronRuby compiler at OSCON. He also announced a quick timeline for further integration of IronRuby into the open source community.

On August 31, 2007, John Lam and the DLR Design Team released the code in its pre-alpha stage on RubyForge. The source code has continued to be updated regularly by the core Microsoft team (but not for every check-in). The team also does not accept community contributions for the core Dynamic Language Runtime library, at least for now.

On July 24, 2008, the IronRuby team released the first binary alpha version, in line with OSCON 2008. On November 19, 2008, they released a second Alpha version.

The team actively worked to support Rails on IronRuby. Some Rails functional tests started to run, but a lot of work still needed to be done to be able to run Rails in a production environment.

On May 21, 2009, they released 0.5 version in conjunction with RailsConf 2009. With this version, IronRuby could run some Rails applications, but still not on a production environment.