Here are some Gems we recommend that you checkout.

• Authentication / Authorization
  • devise - Flexible authentication solution for Rails with Warden
  • cancan - authorization library for Rails which restricts what resources a given user is allowed to access
  • pundit - Minimal authorization through OO design and pure Ruby classes
• HTTP Clients
  • curb - Ruby bindings for libcurl
  • httparty - Fun HTTP client for Ruby
  • typhoeus - Multithreaded library for accessing web services in Ruby
• Mac OSX
  • lunchy - A friendly wrapper for launchctl, used to manage services. Great for managing daemons installed via Homebrew, such as Postgres, Memcached, Redis, etc.
• Logging
  • itslog - log formatter with color support
• Rails Console
  • pry - IRB alternative and runtime developer console
    • pry-rails - Rails initializer for Rails
    • pry-remote - Connect to pry console remotely
    • pry-nav - Binding navigation commands for Pry to make a simple debugger
  • rbenv - Simple Ruby version management. Less intrusive than RVM.
• ORM
  • audited - ORM extension that logs all changes to your Rails models
• Form Helpers
  • simpleform - Alternative form helpers, tied to a simple DSL, with no opinion on markup, with support for Twitter Bootstrap
• Configuration
  • figaro - Facilitates storing sensitive configuration information for your app in a file not checked into the repository, such as AWS keys, passwords, etc.
• Testing / Continuous Integration
  • rspec - Alternative to Test::Unit. Easier to read. More specific test support (doesn’t couple view/controller testing)
  • webmock - Library for stubbing and setting expectations on HTTP requests in Ruby
  • simplecov - SimpleCov is a Code coverage analysis tool for Ruby 1.9+.
  • fabrication - alternative to FactoryBot for fixtures replacement. Github
  • database_cleaner - Strategies for cleaning databases in Ruby. Can be used to ensure a clean state for testing
  • heckle - mutation tester that modifies your code and runs your tests to make sure they fail (like they should)
  • cucumber-rails - Rails Generators for Cucumber with special support for Capybara and DatabaseCleaner
  • launchy - launches external application from within ruby programs. Used to view state of virtual page renders with Cucumber/Capybara
  • capybara - Acceptance test framework for web applications
  • capybara-webkit - A capybara driver that uses WebKit via QtWebKit
  • poltergeist - Headless Javascript engine driver for Capybara
  • headless - Ruby wrapper for Xvfb, the virtual framebuffer
  • guard - command line tool to easily handle events on file system modifications. Use ‘gem search -r ^guard-‘ to view the many plugins that work with guard to automate testing, asset building, etc.
    • guard-rspec - automatically run your specs after modifying models/spec files
    • guard-pow - automatically manage Pow applications restart
    • guard-cucumber - automatically run your features
• Development
  • capistrano - Used to deploy Rails applications to hosting environments such as a VPS
  • capistrano-unicorn - Capistrano integration for Unicorn
  • jasminerice - Pain free coffeescript testing under Rails 3.1