Provides a library to generate PDF documents.

Module adds simple aspect-oriented programming concepts to Ruby; allows wrapping code around extant methods in classes, which separates different concerns into different parts of the code. [Open Source, GPL]

High level library to deal with text user interfaces, build command line interfaces. Robust formatting has word wrap, paging, and list handling are possible. Handles validation rules for user input, implements menus easily. [Open source, GPL or Ruby L...

Ruby bindings to the wxWindows cross-platform toolkit; documents, references, Wiki, downloads. [Open source]

Interfaces the Simple Directmedia Library to Ruby, giving it high speed graphics, sound, and input abilities. Links to related projects. [Open source, LGPL]

Cygwin DLL; GTk+ on Win32 DLLs; bmingw; rb2exe, turns Ruby scripts to executable files, which need Ruby interpreter.

Program to encrypt/decrypt streams of data using Rijndael and Cipher Block Feedback mode (CFB-128), for shell scripts and Ruby. Description, downloads.

Provides a module allowing to use the curl library in an application.

Modules: NArray class for Numerical N-dimensional Arrays; Quanty (units) class containing value and unit, for automatic unit conversion and calculation; link to PGPlot graphics library interface.

CORBA for Ruby. Goal: a pure Ruby version based on CORBA-Ruby Mapping Specification.