Rails
Rails 是用 Ruby 编写的一款完整的、开放源代码的 Web 框架，目的是使用更简单而且更少的代码编写实际使用的应用程序。
RSpec
RSpec is a framework which provides programmers with a Domain Specific Language to describe the behaviour of Ruby code with readable, executable examples that guide you in the design process and serve well as both documentation and tests.
Ferret
Ferret is an interactive computer visualization and analysis environment designed to meet the needs of oceanographers and meteorologists analyzing large and complex gridded data sets.
cache_fu
ache_fu 是rails里的一个实现memcached的插件,用来做对象缓存和查询缓存的。
Locomotive
Locomotive是一个包装好的Ruby on Rails套件，安装完就可以开始开发Ruby on Rails应用程式