Which are the precious Rails RubyGems that Railers can't live without?

Question

There are a lot of interesting gems beyond the classic Rails gem pack: cucumber, formtastic, rspec, shoulda, coulda, webrat, selenium, will_paginate, authlogic, searchlogic, inherited resources ...

Let's make some effort to catalog the best Rails gems on SO.

I'm new to the Rails community and a little bit lost with so many options for resolving the issues.

Answer 1

Who could live without RedCloth and hpricot?

Also worth mentioning are two fine irb enhancers: hirb and wirble

Answer 2

Clearance - http://github.com/thoughtbot/clearance

Paperclip - http://github.com/thoughtbot/paperclip

FactoryGirl - http://github.com/thoughtbot/factory%5Fgirl

Sprockets - http://www.getsprockets.com/

Answer 3

• RSpec - http://rspec.info/rails/
• Viget Deployment - http://github.com/vigetlabs/viget%5Fdeployment

Answer 4

Passenger!!

Answer 5

jRails of course.

Answer 6

• NewRelic RPM
• Hoptoad
• Authlogic
• Haml

Answer 7

will_paginate,attachment_fu,rspec these are coool