Lets you figure out if your gems and gems you install might work on JRuby. Uses http://isitrubyjruby.com as its datastore. Be sure to update the website with your experiences!

Immutable Attributes is an ActiveRecord extension that prevents existing data from changing

A web framework for Javascript.

JAMES' VERSION OF This library makes it easy to implement REST-like web services APIs.

Determine whether the HTTP user agent talking to your code is a web spider.

Celerity is a JRuby library for easy and fast functional test automation for web applications. It is a JRuby wrapper around HtmlUnit – a headless Java browser with JavaScript support. It provides a simple API for programmatic navigation through web applications. Celerity aims at being API compatible with Watir.

Ruby Apriori is a library to efficiently find item association rules within large sets of transactions.

Generates the stub files needed for testing with jasmine on a webos application. Runs a server to view your tests against.

Ruby-based client for JasperServer. Allows for requesting and fetching reports using Ruby from a networked JasperServer over SOAP.

JDTc provides a wrapper around eclipse's java compiler, this makes it a dropin replacement for sun's javac. This would be used to later build eclipse based plugins using rake/buildr using buildr4eclipse (http://buildr4eclipse.googlecode.com/)

Sequel plugin designed to maintain a revision history of an object. Sequel_revisioned will create a revision table and model specific to the class that calls `is :revisioned`. It's set up this way to allow multiple tables to maintain revisions without interfering with each other.

Make JavaScript look and feel like Ruby -- fancy JavaScript preprocessor. More info to come later.

A nice generator for a Jekyll website including Disqus comments integration. Probably tightly integrated to github and Github Pages. Will be relaxed later.

S3 backup and restore program

A gem packaging of the {Jetty Web Server}[http://www.mortbay.org/jetty/] for JRuby: * Provides jetty, jetty-util, servlet-api, and jetty-rewrite-handler \ jars. * A Jetty::ServerFactory for simple programmatic server setup in ruby. * A set of Jetty::TestServlets containing a SnoopServlet and PerfTestServlet (implemented in Java). * A jetty-service bin script for easy testing from the command line. Note that JSP support is provided separately in the companion jetty-jsp[http://rjack.rubyforge.org/jetty-jsp/] gem.

A gem packaging of the {Jetty Web Server}[http://www.mortbay.org/jetty/] JSP 2.1 support for JRuby. This gem is provided as a companion to the jetty[http://rjack.rubyforge.org/jetty/] gem.

Jetty Rails aims to run Ruby on Rails and Merb applications with the Jetty Container, leveraging the power of JRuby and jruby-rack. {Jetty}[http://jetty.mortbay.com/jetty/] is an excellent Java Web Server, being and at the same time extremely lightweight. This makes jetty-rails a good alternative for JRuby on Rails or Merb development and deployment. The project has born from my own needs ({read more}[http://fabiokung.com/2008/05/14/jetty-rails-gem-simple-jruby-on-rails-development-with-servlet-containers/]). I needed to run {JForum}[http://jforum.net] in the same context of my JRuby on Rails application. I had also to integrate HttpSessions (avoiding single sign on) and use ServletContext in-memory cache store.

JEXML is a JRuby gem that provides a thin Ruby wrapper around the XML APIs in the JDK.

A jig is an ordered sequence of objects (usually strings) and named _gaps_. When rendered as a string by Jig#to_s, the objects are rendered calling #to_s on each object in order. The gaps are skipped. A new jig may be constructed from an existing jig by 'plugging' one or more of the named gaps. The new jig shares the objects and their ordering from the original jig but with the named gap replaced with the 'plug'. Gaps may be plugged by any object or sequence of objects. When a gap is plugged with another jig, the contents (including gaps) are incorporated into the new jig. Several subclasses (Jig::XML, Jig::XHTML, Jig::CSS) are defined to help in the construction of XML, XHTML, and CSS documents. This is a jig with a single gap named :alpha. Jig.new(:alpha) # => <#Jig: [:alpha]> This is a jig with two objects, 'before' and 'after' separated by a gap named :middle. j = Jig.new('before', :middle, 'after) # => #<Jig: ["before", :middle, "after"]> The plug operation derives a new jig from the old jig. j.plug(:middle, ", during, and") # => #<Jig: ["before", ", during, and ", "after"]> This operation doesn't change j. It can be used again: j.plug(:middle, " and ") # => #<Jig: ["before", " and ", "after"]> There is a destructive version of plug that modifies the jig in place: j.plug!(:middle, "filled") # => #<Jig: ["before", "filled", "after"]> j # => #<Jig: ["before", "filled", "after"]> There are a number of ways to construct a Jig and many of them insert an implicit gap into the Jig. This gap is identified as :___ and is used as the default gap for plug operations when one isn't provided:

jirarest2 is yet another implementation of the JIRA(tm) REST-API[https://developer.atlassian.com/display/JIRADEV/JIRA+Remote+API+Reference] . This one for Ruby1.9.1 It is intended to be called within the shell to create and verify JIRA(tm) issues fast without a browser. There was no particular need for perfomance at the time of writing. This implementation is still a for cry from others like http://rubygems.org/gems/jira-ruby which requires oauth authentication. There are scripts to create new issues with watchers and link those to existing issues and to manipulate watchers on existing issues. *Use it at your own risk. Most of the API features are not implemented.* *Ruby1.9.1 is needed. Ruby1.8 doesn't work!*