MuraveyWeb: Project Info a Content Management System built on top of Ruby on Rails web-framework. It has support for version control, custom document types, WYSIWYG content editors, image transformations and much more.
Win32 Utils: Project Info A series of packages that provide Ruby interfaces to Win32 systems and services. This project supports Windows NT, 2000 and XP only.
eXPlain Project Management Tool: Project Info eXPlain Project Management Tool (or eXPlainPMT) is a web-based application built using the Ruby on Rails framework that supports the eXtreme Programming development methodology.
wxRuby: Project Info a library to allow Ruby programs to use wxWindows 2.4.x (also known as wxWidgets), which is a mature, cross-platform, GUI toolkit that uses native widgets where possible.
Ruby/ActiveLDAP: Project Info provides an object oriented interface to LDAP. It maps LDAP entries to Ruby objects with LDAP attribute accessors exposed as methods dynamically assigned based on your LDAP server's schema and each object's objectClasses.
SWIG (the Simplified Wrapper and Interface Generator ) is a software development tool that connects programs written in C and C++ with a variety of high-level programming languages, including Ruby.
Yaml is a specification for storing objects in plain text. Native types have a representation which is natural and meaningful. The comparison has been made: "Yaml is to XML as Wiki is to HTML."
From the rbSnack project page on SourceForge: "Ruby SCREAMS, so lets give it a voice! The first step is to port the Snack Tcl/Tk API to Ruby. Then we can talk about games, speech recognition, AI, and a meaningful relationship with your computer!"