Ruby

AJAX-based viewer for Ruby API documentation.

Comparison of all of the current Ruby implementations with basic performance info.

Memory leak detection

Home page for the RubyCocoa project on SourceForge.

Reference manual for RubyGems

Merb is a new, light weight MVC framework optimized for simplicity and performance. From the site intro: “Like Ruby on Rails, Merb is an MVC framework. Unlike Rails, Merb is ORM-agnostic, JavaScript library agnostic, and template language agnostic, preferring plugins that add in support for a particular feature rather than trying to produce a monolithic library with everything in the core. In fact, this is a guiding principle of the project, which has led to third-party support for the ActiveRecord, DataMapper, and Sequel ORMs.”

The first edition of the primary Ruby reference work is available for free online. The print version is in the second edition.

The Ruby language RDOCs.

Discussion on using GDB to explore a running Ruby (1.8) process.

Why's discussion of some of the Garbage Collector's behavior in the Ruby 1.8 code.

Rails Doc morphed into APIdock. Collects various versions of Rails, Ruby, and Rspec documentation into one place.

RSpec is a Behaviour Driven Development framework for Ruby. It provides two frameworks for writing and executing examples of how your Ruby application should behave: a Story Framework for describing behaviour at the application level; and a Spec Framework for describing behaviour at the object level.

How to compile the mysql gem when using the Mac Ports install of MySQL and the native Mac OS X Leopard (10.5) Ruby and Rails (and gems) installs.

Log4r is a comprehensive and flexible logging library written in Ruby for use in Ruby programs. It features a hierarchical logging system of any number of levels, custom level names, logger inheritance, multiple output destinations, execution tracing, custom formatting, thread safteyness, XML and YAML configuration, and more.

No-frills, full cheat-sheet for ruby-debug.

Instructions for installing RMagick on Mac OS X, including how to use MacPorts to get ImageMagick running. Part of the larger documentation set for RMagick.

Documentation for the SVN (latest) version of ruby-debug.

Wiki with extensive set of information about Ruby.

An active and authoritative blog about Ruby techniques, from the author of Beginning Ruby.

This blog includes a useful weekly post titled “This week in Ruby” with a roundup of the latest Ruby-related news.

Ruby developer, author of ruby-debug.

Aggregated Ruby-related blog posts.

Ruby blog aggregator

Aggregator for Ruby blogs.

One of the primary developers of JRuby.

Author of Rails Recipies, co-founder of Ruby Central, and one of the leaders of the Ruby community.

Ramblings/life in San Francisco/code.

Learn to program in Ruby from two real experts in the field, Dave Thomas and Chad Fowler.

Primary discussion group for users of the Ruby language. Very high traffic.

A quick runthrough of merb-slices, showing how to create a slice and then do some overrides from the main application. Merb-slices are like mini-applications that can be connected to your router. Akin to Rails Engines.

Central site for the Ruby programming language

Very fast, Ruby 1.8.6 compatible fork of Ruby. Very good memory handling.

Facets is a huge collection of Ruby libraries. Before you write something that addresses a common problem, look here to see if it has already been done for you.

Provides a rake tasks that adds comments to all your models listing the database columns.

A gem that supports using enhanced gems to replace Rails plugins.

Announcin preview releases of Net::SSH, Net::SFTP, and Net::SCP

Official Mocha Readme

FlexMock is a simple, but flexible, mock object library for Ruby unit testing that integrates easily with Test::Unit.

Enterprise support for Ruby applications from ThoughtWorks.

Ruby-specific search engine.

An excellent site for finding and rating Ruby gems.

A great free tool for working with regular expressions. Enter your expression and some test text, and it gives you the matches. Includes a nice quick reference in the same window to help you write the expression.