Ruby: www.ruby-lang.org [1]
Active Record—Object-relation mapping put on rails: api.rubyonrails.org/files/vendor/rails/activerecord/README.html [2]
Martin Fowler on Active Record: www.martinfowler.com/eaaCatalog/activeRecord.html [3]
SOAP4R: dev.ctor.org/soap4r [4]
WEBrick: www.webrick.org [5]
Builder: builder.rubyforge.org [6]
Links:
[1] http://www.ruby-lang.org
[2] http://api.rubyonrails.org/files/vendor/rails/activerecord/README.html
[3] http://www.martinfowler.com/eaaCatalog/activeRecord.html
[4] http://dev.ctor.org/soap4r
[5] http://www.webrick.org
[6] http://builder.rubyforge.org