Is a gem ready for Rails 4 or 5?

Rails 4: 582 ready, 38 not ready, and 435 unknown
Rails 5: 91 ready, 10 not ready, and 954 unknown
Name Status Rails 4 Notes Rails 4 Status Rails 5 Notes Rails 5 Status or notes updated
rails-dom-testing ready

yes

ready

from 2.0.0 https://github.com/rails/rails-dom-testing/releases

almost 2 years ago
active_record_union ready

why not?

ready

According to changelog ready from 1.2.0 https://github.com/brianhempel/active_record_union#changelog

almost 2 years ago
pg ready

Does not depend on Rails

ready

Does not depend on Rails

almost 2 years ago
hyperkit ready

It works!

unknown almost 2 years ago
drafting ready

see readme

ready

see readme

almost 2 years ago
keepr ready

see readme

ready

see readme

almost 2 years ago
acts_as_paranoid ready

See comment of jonty davis below

ready

0.5.0

almost 2 years ago
squeel ready

Support for ActiveRecord 4.0.0 added in version 1.1.0 (source)

not ready

see https://github.com/activerecord-hackery/squeel/issues/412

almost 2 years ago
newrelic_rpm ready

_

ready

since version 3.15.0

almost 2 years ago
database_cleaner ready

since gem version 1.0.0 (source)

ready

since version 1.5.2

almost 2 years ago
gon ready

_

ready

since version 6.0.1

almost 2 years ago
attr_encrypted ready

See Jason's comment below

ready

since version 3.0.2

almost 2 years ago
rack-oauth2 ready

_

ready

since version 1.2.2

almost 2 years ago
kaminari ready

_

ready

since version 0.17.0

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

almost 2 years ago
state_machines-activerecord ready

_

ready

since version 0.4.0

almost 2 years ago
thin ready

_

ready

since version 1.7.0

almost 2 years ago
oauth2 ready

Standalone gem

ready

since version 1.2.0

almost 2 years ago
web-console ready

_

ready

since version 2.3.0

almost 2 years ago
font-awesome-rails ready

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

ready

since version 4.5.0.1

almost 2 years ago