Opal is a powerful Item Management Application built in Ruby on Rails. It allows you to list any kind of item, from houses to video games to hotdog vendors.

URL Shortener - This is an application written in Ruby on Rails. This application allows visitors to shorten their URLs too long.

Use GrabzIt to programmatically take screenshots of websites, either as images, tables or PDF's, with this completely open source and free library. We have also provided easy to follow online tutorials and sample applications to help you set up GrabzIt as quickly as possible.

Features include Draw full mathematical equations on a web chat! Support Latex rendering in all browser via MathJax (I suggest Google Chrome for better performace), A classic web chat application, Update chat message every 2 seconds, Possibility of being included in a larger web site.

Fat Free CRM is open source Ruby on Rails-based customer relationship management platform. Out of the box it features group collaboration, campaign and lead management, contact lists, and opportunity tracking.

Both applets can run on over 90% of computers, using any browser that supports Flash 9. Additionally, both are Section 508 compliant, and are accessibility enabled. The applets text and color schemes are highly customizable, all text can be modified, and the colors can easily be modified with standard CSS. We also offer screencasts detailing the features and installation of both versions. Ruby on Rails plug-ins are provided to speed the installation and deployment, and all the code is thoroughly documented, in comments and externally.

Ezror is the easy, simple way to install and configure everything you need to get your Rails app up and running. Simple download the script, enter in the required information and Ezror will take care of the rests. Its really that simple!

Tracks is a web-based application to help you implement David Allen’s Getting Things Done™ methodology. It was built using Ruby on Rails, and comes with a built-in webserver (WEBrick), so that you can run it on your own computer if you like. It can be run on any platform on which Ruby can be installed, including Mac OS X, Windows XP and Linux.

Boost your website with viral marketing ! Our award winning scripts imports contacts from Hotmail, Yahoo, Gmail, and AOL address books. Easy to integrate with any Ruby site or application.

Scruffy is a Ruby library for generating attractive and powerful graphs, useful for web applications, print media and many others.

Onyx is an open source Ruby on Rails based image gallery. It is designed to be clean and intuitive, flexible, customizable, and quick. Features Customizable Themes(more coming soon) Organize Images by Category/Tag Secure Admin area Upload your images from your computer or a direct URL Built-In RSS feed generator Cool Image Viewer & Slidehow Comments for each Image Demo Login: admin/admin

Amethyst is an open source, ruby on rails based blog application. It is customizable, user-friendly, and very simple to use. Whether your like to write technical articles, personal babblings, or any sort of notable thought, Amethyst can organize it for you! Demo Login: admin/admin

Radiant is a no-fluff, open source content management system designed for small teams. Radiant features: An elegant user interface Flexible templating with layouts, snippets, page parts, and a custom tagging language Special page-oriented plugins called behaviors A simple user management/rights system

Web based project management tool for software development projects. Featuring: Issue tracking, Code browser (Subversion SVN), Changeset and revision management, Wiki, Announcement Blog, Multiple repositories and projects. Similar to Trac but with additional features and a stronger focus on simplified administration.

Goldberg is a web deployment environment for your Rails apps. Goldberg provides you with: A login system. Comprehensive yet easy to configure security, featuring roles and their associated permissions. When you set up users you assign each a role. Roles can inherit from other roles recursively. Site navigation through a menu system. The menu items are linked either to controller actions or to pages of content. What menu items a user can see is determined by that user’s permissions. A basic content management system, so you can type up pages and put them in your web site—either in the menu, or linked from other pages.

We are looking for Ruby on Rails leaders to come and join RubySquad. If you are new to Ruby on Rails, you are very welcome too. If you are a developer that is using other languages, then you should join RubySquad as well. Be a part of RubySquad!

This very simple plugin was built for my own use. The idea was to make one call for my checkbox, update to the database, and an effect. This plugin is easy to use and install...

Here's a quick Howto on setting up Ruby on Rails for Windows.

Rails Forum is a ruby on rails help and discussion community. It is one of the fastest growing Ruby on Rails communities on the net, and is probably the biggest forum out there dedicated soley to RoR.

Developing Ruby on Rails applications requires an ability to program in the Ruby language. This guide, written by the creator of Ruby, provides an easy to follow guide to the Ruby programming language, covering all the important topics including variables, looping, object-oriented programming, strings, arrays, error handling and much more. This guide is recommended for anyone planning to develop using the Ruby on Rails framework.