Rails

Here are a few commonly used gems I like and their alternatives

Rails Efficient web development framework based on MVC design pattern. Alternative
Sinatra:: Lightweight web development options
jquery-rails:jQuery for rails.
haml-rails: Simplify the preparation of the view layer, less troublesome duplicate labels.
- Alternative:erb-rails
devise: User authentication plugin.
rspec-rails:test
seed-fu: Data initialization
faraday: http request and html content analysis