gems

https://rubygems.org/gems/devise - authentication
https://rubygems.org/gems/pundit - rbac
https://github.com/ryanb/cancan - rbac
https://rubygems.org/gems/draper - decorator for models
https://rubygems.org/gems/cells - cells
https://rubygems.org/gems/friendly_id - url friendly
https://github.com/rsl/stringex - prettyurl
https://rubygems.org/gems/simple_form - forms 
https://rubygems.org/gems/paperclip - files stuff
https://rubygems.org/gems/kaminari - pagination
https://github.com/mislav/will_paginate/wiki - pagination
https://rubygems.org/gems/sidekiq - background jobs
https://github.com/ctran/annotate_models - models annotate
https://github.com/charliesome/better_errors - errors stuff
https://github.com/flyerhzm/bullet - performance 
https://github.com/plentz/lol_dba - db stuff
meta_request - chrome rails tab
https://github.com/evrone/quiet_assets - mute assets in rails console
https://github.com/preston/railroady - uml from models
https://github.com/josevalim/rails-footnotes - editor links and footnotes
https://github.com/haml/haml - haml instead of erb
https://github.com/gregbell/active_admin - active admin
https://github.com/rspec/rspec - rspec
https://github.com/stympy/faker - Faker
https://github.com/carrierwaveuploader/carrierwave - file uploading
https://github.com/hashrocket/decent_exposure - YAR exposure
http://compass-style.org - compass
http://metautonomo.us/projects/metawhere/ - diff dbs?
https://github.com/plataformatec/has_scope - some stuff for filtering
https://github.com/mbleigh/acts-as-taggable-on - tagging 
https://github.com/mojombo/chronic - dates
https://github.com/radar/paranoia - delete undo
http://www.rubygeocoder.com/ - geo stuff
http://www.algolia.com/ - site search
https://github.com/tenderlove/namecase - proper name cases
https://stripe.com - c/c
https://github.com/splitrb/split - a/b testing
https://github.com/jnunemaker/httparty - http
http://www.nokogiri.org - nokogiri
https://github.com/seattlerb/minitest - test
https://github.com/jnicklas/capybara - click clack test
https://github.com/thoughtbot/factory_girl_rails - testing
https://www.heroku.com
https://github.com/fastestforward/heroku_san - SOSO
https://github.com/mperham/dalli - cache
https://www.memcachier.com/ - cache
https://elements.heroku.com/addons/scheduler