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
bundler ready

Does not depend on rails

ready

Does not depend on rails

over 1 year ago
cancancan ready

Was started as a semi-official reboot of cancan (which is not yet Rails 4 ready). Work on cancan seems to have stopped, cancancan is Rails 4 ready.

ready

since gem version 1.15.0

almost 2 years ago
capybara ready

https://github.com/jnicklas/capybara/pull/1024

ready

mentioned in the README

29 days ago
choices ready

Does not depend on Rails

ready

does not depended on Rails

over 1 year ago
clearance ready

from version 1.0.0.rc7 (source)

ready

from version 1.13

over 2 years ago
cloudinary ready

https://github.com/cloudinary/cloudinary_gem/blob/master/cloudinary.gemspec

ready

https://github.com/cloudinary/cloudinary_gem/pull/243

over 1 year ago
coffee-rails ready

_

ready

since gem version 4.1.1

over 2 years ago
comfortable_mexican_sofa ready

-

ready

since version 1.12.10

almost 2 years ago
database_cleaner ready

since gem version 1.0.0 (source)

ready

since version 1.5.2

over 2 years ago
default_value_for ready

since gem version 3.0.0

ready

since gem version 3.0.2

over 2 years ago
delayed_paperclip ready

Version 3.0 is ready for Rails 4, implemented, tested.

ready

Version 3.0 is ready for Rails 5, see comment in release notes.

over 1 year ago
devise ready

from gem version 3.0.0

ready

since gem version 4.0.0.

over 2 years ago
diaspora_federation-rails ready

It works

ready

Since 0.1.6

almost 2 years ago
doorkeeper ready

since 0.7.0 https://github.com/applicake/doorkeeper/blob/master/CHANGELOG.md#070

ready

since version 4.0.0

over 2 years ago
dotenv-rails ready

Works fine, tested with Rails 4.

ready

since version 2.1.0 (https://github.com/bkeepers/dotenv/blob/master/Changelog.md#210---jan-13-2016)

about 2 years ago
drafting ready

see readme

ready

see readme

over 2 years ago
draper ready

-

ready

since version 3.0, see https://github.com/drapergem/draper/blob/master/CHANGELOG.md#300pre1---2016-07-10

over 1 year ago
enumerate_it ready

https://github.com/lucascaton/enumerate_it/blob/master/.travis.yml#L25

ready

https://github.com/lucascaton/enumerate_it/blob/master/.travis.yml#L26

over 1 year ago
exception_notification ready

since 4.0.0.rc1

ready

from version 4.2.0

about 2 years ago
factory_girl ready

https://github.com/thoughtbot/factory_girl/blob/master/Appraisals#L9

ready

since version 4.4

over 2 years ago