"wxRuby allows the creation of graphical user interface (GUI) applications via the wxWidgets library. wxRuby provides native-style GUI windows, dialogs and controls on platforms including Windows, OS X and Linux." The original wxruby was only maintained upto Ruby 1.9-x86. wxruby64 is a rebuild of the original codebase, for one Ruby version (2.3) and one platform (x64-mingw32) only. This was enough work by itself! This platform matches the binaries by rubyinstaller.org. I don't know if it works on any other versions or platforms.