is the most 'standard' binary from the common point-of-view in the Windows world. But we cannot use some parts of characteristic functions which ruby on UNIX has.
a free source code editor which supports several programming languages running under the MS Windows environment. based on Scintilla edit component (a very powerful editor component)
a free user interface builder for GTK+ and GNOME interfaces designed are saved as XML, and by using the libglade library these can be loaded by applications dynamically as needed. (Glade can also generate C code)
a pure Java implementation of the Ruby interpreter is tightly integrated with Java to allow both to script any Java class and to embed the interpreter into any Java application.
a free Ruby-based environment aiming to make programming easily available to beginners, especially children. Its driving force was an essay titled The Little Coder's Predicament written in 2003 by why the lucky stiff (AKA why)