Is a gem ready for Rails 4 or 5?

Rails 4: 583 ready, 38 not ready, and 435 unknown
Rails 5: 95 ready, 10 not ready, and 951 unknown

Gems ready for Rails 5

Name Status Rails 4 Notes Rails 4 Status Rails 5 Notes Rails 5 Status or notes updated
factory_girl_rails ready

-

ready

since version 4.4

over 2 years ago
filterrific ready

https://github.com/jhund/filterrific/blob/master/CHANGELOG.md

ready

https://github.com/jhund/filterrific/blob/master/CHANGELOG.md

over 1 year ago
font-awesome-rails ready

https://github.com/bokmann/font-awesome-rails/issues/45

ready

since version 4.5.0.1

over 2 years ago
geocoder ready

says so in readme

ready

see https://git.io/vXCdc

about 2 years ago
gon ready

_

ready

since version 6.0.1

over 2 years ago
gretel ready

https://github.com/lassebunk/gretel/blob/master/gretel.gemspec

ready

See https://github.com/lassebunk/gretel/pull/66#issuecomment-216639544

over 1 year ago
haml_coffee_assets ready

see https://github.com/emilioforrer/haml_coffee_assets/blob/master/.travis.yml

ready

see https://github.com/emilioforrer/haml_coffee_assets/blob/master/.travis.yml

8 months ago
high_voltage ready

-

ready

since version 3.0

over 2 years ago
hipchat-api ready

Does not depend on Rails.

ready

Does not depend on Rails.

over 1 year ago
house_style ready

Was created for Rails 4 apps

ready

With no dependencies on Rails internals, house_style can be used safely with Rails 5

over 1 year ago
i18n-js ready

since gem version 3.0.0.rc8

ready

since gem version 3.0

about 1 year ago
kaminari ready

_

ready

since version 0.17.0

over 2 years ago
keepr ready

see readme

ready

see readme

over 2 years ago
lock ready

https://lockupgem.com

ready

https://lockupgem.com

over 1 year ago
massa ready

It doesn't depend on Rails

ready

It doesn't depend on Rails

over 1 year ago
meta-tags ready

Using gem 'meta-tags', '1.5.0', require: 'meta_tags' (source)

ready

tested up to 5.1 (from https://github.com/kpumuk/meta-tags#ruby-on-rails)

8 months ago
minitest-rails ready

yes

ready

from 3.0.0 https://github.com/blowmage/minitest-rails/blob/master/CHANGELOG.rdoc#300--2016-07-01

about 2 years ago
money-rails ready

Tested in rails upto 4.2.6

ready

from version 1.7.0

about 2 years ago
mongoid not ready

Version 4 will support Rails 4 but it hasn't been released yet

ready

See https://docs.mongodb.com/mongoid/master/tutorials/mongoid-rails/

about 2 months ago
newrelic_rpm ready

_

ready

since version 3.15.0

over 2 years ago