Mit
* actionmailer 3.2.12 (http://www.rubyonrails.org) - Email composition, delivery, and receiving framework (part of Rails).
* actionpack 3.2.12 (http://www.rubyonrails.org) - Web-flow and rendering framework putting the VC in MVC (part of Rails).
* activemodel 3.2.12 (http://www.rubyonrails.org) - A toolkit for building modeling frameworks (part of Rails).
* activerecord 3.2.12 (http://www.rubyonrails.org) - Object-relational mapper framework (part of Rails).
* activeresource 3.2.12 (http://www.rubyonrails.org) - REST modeling framework (part of Rails).
* activesupport 3.2.12 (http://www.rubyonrails.org) - A toolkit of support libraries and Ruby core extensions extracted from the Rails framework.
* arel 3.0.2 (http://github.com/rails/arel) - Arel is a SQL AST manager for Ruby
* bootstrap-sass 3.1.1.0 (https://github.com/twbs/bootstrap-sass) - Twitter's Bootstrap, converted to Sass and ready to drop into Rails or Compass
* builder 3.0.4 (http://onestepback.org) - Builders for MarkUp.
* bundler 1.12.5 (http://bundler.io) - The best way to manage your application's dependencies
* capybara 2.4.4 (http://github.com/jnicklas/capybara) - Capybara aims to simplify the process of integration testing Rack applications, such as Rails, Sinatra or Merb
* coffee-rails 3.2.2 () - Coffee Script adapter for the Rails asset pipeline.
* coffee-script-source 1.6.3 (http://jashkenas.github.com/coffee-script/) - The CoffeeScript Compiler
* docile 1.1.5 (https://ms-ati.github.io/docile/) - Docile keeps your Ruby DSLs tame and well-behaved
* edn 1.0.0 () - 'edn implements a reader for Extensible Data Notation by Rich Hickey.'
* erubis 2.7.0 (http://www.kuwata-lab.com/erubis/) - a fast and extensible eRuby implementation which supports multi-language
* execjs 1.4.0 (https://github.com/sstephenson/execjs) - Run JavaScript code from Ruby
* factory_girl 4.5.0 (https://github.com/thoughtbot/factory_girl) - factory_girl provides a framework and DSL for defining and using model instance factories.
* factory_girl_rails 4.5.0 (http://github.com/thoughtbot/factory_girl_rails) - factory_girl_rails provides integration between factory_girl and rails 3
* gem-licenses 0.1.2 (http://github.com/dblock/gem-licenses) - List all gem licenses.
* hike 1.2.3 (http://github.com/sstephenson/hike) - Find files in a set of paths
* i18n 0.6.5 (http://github.com/svenfuchs/i18n) - New wave Internationalization support for Ruby
* jdbc-postgresql 9.2.1000 (https://github.com/rosenfeld/jdbc-postgresql) - PostgresSQL jdbc driver for JRuby
* journey 1.0.4 (http://github.com/rails/journey) - Journey is a router
* jquery-rails 3.0.4 (http://rubygems.org/gems/jquery-rails) - Use jQuery with Rails 3
* json-schema 2.6.2 (http://github.com/ruby-json-schema/json-schema/tree/master) - Ruby JSON Schema Validator
* mail 2.4.4 (http://github.com/mikel/mail) - Mail provides a nice Ruby DSL for making, sending and reading emails.
* metaclass 0.0.4 (http://github.com/floehopper/metaclass) - Adds a metaclass method to all Ruby objects
* mime-types 1.23 (http://mime-types.rubyforge.org/) - This library allows for the identification of a file's likely MIME content type
* mocha 1.1.0 (http://gofreerange.com/mocha/docs) - Mocking and stubbing library
* multi_json 1.7.9 (http://github.com/intridea/multi_json) - A common interface to multiple JSON libraries.
* nokogiri 1.6.5 (http://nokogiri.org) - Nokogiri (鋸) is an HTML, XML, SAX, and Reader parser
* polyglot 0.3.3 (http://github.com/cjheath/polyglot) - Augment 'require' to load non-Ruby file types
* rack-test 0.6.2 (http://github.com/brynary/rack-test) - Simple testing API built on Rack
* railties 3.2.12 (http://www.rubyonrails.org) - Tools for creating, working with, and running Rails applications.
* rake 10.1.0 (http://rake.rubyforge.org) - Ruby based make-like utility.
* rspec-core 2.14.3 (http://github.com/rspec/rspec-core) - rspec-core-2.14.3
* rspec-expectations 2.14.0 (http://github.com/rspec/rspec-expectations) - rspec-expectations-2.14.0
* rspec-mocks 2.14.1 (http://github.com/rspec/rspec-mocks) - rspec-mocks-2.14.1
* rspec-rails 2.14.0 (http://github.com/rspec/rspec-rails) - rspec-rails-2.14.0
* sass 3.2.9 (http://sass-lang.com/) - A powerful but elegant CSS compiler that makes CSS fun again.
* sass-rails 3.2.6 () - Sass adapter for the Rails asset pipeline.
* simplecov 0.9.0 (http://github.com/colszowka/simplecov) - Code coverage for Ruby 1.9+ with a powerful configuration library and automatic merging of coverage across test suites
* spork 1.0.0rc3 (http://github.com/sporkrb/spork) - spork
* therubyrhino 2.0.2 (http://github.com/cowboyd/therubyrhino) - Embed the Rhino JavaScript interpreter into JRuby
* thor 0.18.1 (http://whatisthor.com/) - A scripting framework that replaces rake, sake and rubigen
* tilt 1.4.1 (http://github.com/rtomayko/tilt/) - Generic interface to multiple Ruby template engines
* treetop 1.4.14 (https://github.com/cjheath/treetop) - A Ruby-based text parsing and interpretation DSL
* uglifier 2.1.2 (http://github.com/lautis/uglifier) - Ruby wrapper for UglifyJS JavaScript compressor
* xpath 2.0.0 (http://github.com/jnicklas/xpath) - Generate XPath expressions from Ruby
* blankslate 2.1.2.4 (http://github.com/masover/blankslate) - BlankSlate extracted from Builder.
* bourbon 3.1.8 (https://github.com/thoughtbot/bourbon) - Bourbon Sass Mixins using SCSS syntax.
* coffee-script 2.2.0 (http://github.com/josh/ruby-coffee-script) - Ruby CoffeeScript Compiler
* diff-lcs 1.2.4 (http://diff-lcs.rubyforge.org/) - Diff::LCS computes the difference between two Enumerable sequences using the McIlroy-Hunt longest common subsequence (LCS) algorithm
* jquery-ui-rails 4.0.3 (https://github.com/joliss/jquery-ui-rails) - jQuery UI packaged for the Rails asset pipeline
* parslet 1.4.0 (http://kschiess.github.com/parslet) - Parser construction library with great error reporting in Ruby.
* rack 1.4.5 (http://rack.github.com/) - a modular Ruby webserver interface
* rack-cache 1.2 (http://tomayko.com/src/rack-cache/) - HTTP Caching for Rack
* rack-ssl 1.3.3 (https://github.com/josh/rack-ssl) - Force SSL/TLS in your app.
* rails 3.2.12 (http://www.rubyonrails.org) - Full-stack web application framework.
* simplecov-html 0.8.0 (https://github.com/colszowka/simplecov-html) - Default HTML formatter for SimpleCov code coverage tool for ruby 1.9+
* tzinfo 0.3.37 (http://tzinfo.rubyforge.org/) - Daylight-savings aware timezone library
* warbler 1.4.0.beta1 (http://caldersphere.rubyforge.org/warbler) - Warbler chirpily constructs .war files of your Rails applications.

Artistic 2.0
* mime-types 1.23 (http://mime-types.rubyforge.org/) - This library allows for the identification of a file's likely MIME content type

Gpl-2
* mime-types 1.23 (http://mime-types.rubyforge.org/) - This library allows for the identification of a file's likely MIME content type

Bsd
* activerecord-jdbc-adapter 1.2.9.1 (https://github.com/jruby/activerecord-jdbc-adapter) - JDBC adapter for ActiveRecord, for use within JRuby on Rails.
* jdbc-postgres 9.2.1004 (https://github.com/jruby/activerecord-jdbc-adapter) - PostgreSQL JDBC driver for JRuby and PostgreSQL/ActiveRecord-JDBC (activerecord-jdbcpostgresql-adapter).

Apache license 2.0
* addressable 2.3.8 (https://github.com/sporkmonger/addressable) - URI Implementation
* bcrypt-ruby 3.0.1 (http://bcrypt-ruby.rubyforge.org) - OpenBSD's bcrypt() password hashing algorithm.
* database_cleaner 1.4.0 (http://github.com/bmabey/database_cleaner) - Strategies for cleaning databases.  Can be used to ensure a clean state for testing.
* annotate 2.5.0 (http://github.com/ctran/annotate_models) - Annotates Rails Models, routes, fixtures, and others based on the database schema.
* smack 3.3.1 (https://www.igniterealtime.org/projects/smack/) - XMPP library

Ruby
* json 1.8.0 (http://json-jruby.rubyforge.org/) - JSON implementation for JRuby
* rubyzip 0.9.9 (http://github.com/aussiegeek/rubyzip) - rubyzip is a ruby module for reading and writing zip files
* httpclient 2.3.4.1 (http://github.com/nahi/httpclient) - gives something like the functionality of libwww-perl (LWP) in Ruby

Ruby's and psfl (lib/test/unit/diff.rb)
* test-unit 2.5.5 (http://test-unit.rubyforge.org/) - test-unit - Improved version of Test::Unit bundled in Ruby 1.8.x.

Public domain
* torquebox 3.1.2 (http://torquebox.org/) - TorqueBox Gem
* torquebox-cache 3.1.2 (http://torquebox.org/) - TorqueBox Cache Gem
* torquebox-configure 3.1.2 (http://torquebox.org/) - TorqueBox Configure Gem
* torquebox-core 3.1.2 (http://torquebox.org/) - TorqueBox Core Gem
* torquebox-messaging 3.1.2 (http://torquebox.org/) - TorqueBox Messaging Client
* torquebox-naming 3.1.2 (http://torquebox.org/) - TorqueBox Naming Client
* torquebox-rake-support 3.1.2 (http://torquebox.org/) - TorqueBox Rake Support
* torquebox-security 3.1.2 (http://torquebox.org/) - TorqueBox Security Gem
* torquebox-server 3.1.2 (http://torquebox.org/) - TorqueBox Server Gem
* torquebox-stomp 3.1.2 (http://torquebox.org/) - TorqueBox STOMP Support
* torquebox-transactions 3.1.2 (http://torquebox.org/) - TorqueBox Transactions Gem
* torquebox-web 3.1.2 (http://torquebox.org/) - TorqueBox Web Gem

LGPL
* jruby-1.7.4
* jruby-jars 1.7.4 (http://github.com/jruby/jruby/tree/master/gem/jruby-jars) - The core JRuby code and the JRuby stdlib as jar
* jruby-rack 1.1.13.2 (http://jruby.org) - Rack adapter for JRuby and Servlet Containers
  ** JRuby is tri-licensed GPL, LGPL, and EPL.

MPL
* therubyrhino_jar 1.7.4 (http://github.com/cowboyd/therubyrhino) - Rhino's jars packed for therubyrhino

Unknown
* spork-testunit 0.0.8 (http://github.com/timcharper/spork-testunit) - spork-testunit
* sprockets 2.2.2 (http://getsprockets.org/) - Rack-based asset packaging system