Is a gem ready for Rails 4 or 5?

Rails 4: 614 ready, 38 not ready, and 433 unknown
Rails 5: 158 ready, 12 not ready, and 915 unknown

Gems ready for Rails 5

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

almost 2 years 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

11 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

almost 2 years ago
i18n-js ready

since gem version 3.0.0.rc8

ready

since gem version 3.0

over 1 year ago
jbuilder ready

-

ready

5.2 from v2.8.0, 5.1 from v2.6.3, 5.0 from v2.5.0

about 1 month ago
jquery-rails ready

-

ready

https://github.com/rails/jquery-rails#installation mentions Rails 5.1. See also Taryn's comment

about 1 month ago
jquery-ui-rails ready

from gem version 4.0.2 (source)

ready

readme mentions Rails 5.0 (https://github.com/jquery-ui-rails/jquery-ui-rails#warning)

about 1 month ago
jwt ready

Running on our 4.2 app for some time.

ready

Not dependent on rails

about 1 month ago
kaminari ready

_

ready

since version 0.17.0

over 2 years ago
keepr ready

see readme

ready

see readme

over 2 years ago
launchy ready

does not depend on rails

ready

does not depend on rails

about 1 month ago
librato-rails ready

Running on our 4.2 app for some time

ready

5.0 support from v2.1.0

about 1 month ago
listen ready

Running on our 4.2 app for some time

ready

Not dependent on rails

about 1 month ago
lock ready

https://lockupgem.com

ready

https://lockupgem.com

almost 2 years ago
lograge unknown ready

5.0 from v0.4.0, 5.1 from v0.5.0, 5.2 from ? mentioned in commit messages though

29 days ago
marco-polo ready

running in our 4.2 app for some time

ready

Not specified... Has rails dependencies, but just uses ENV vars for app name. Probably ok.

about 1 month ago
massa ready

It doesn't depend on Rails

ready

It doesn't depend on Rails

almost 2 years ago