Is a gem ready for Rails 4 or 5?

Rails 4: 615 ready, 38 not ready, and 433 unknown
Rails 5: 163 ready, 11 not ready, and 912 unknown

Gems ready for Rails 4

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

about 2 years ago
delocalize ready

since gem version 0.4.0

unknown almost 5 years ago
devise ready

from gem version 3.0.0

ready

since gem version 4.0.0.

over 3 years ago
devise_invitable ready

since 1.2.0

unknown almost 6 years ago
devise_security_extension ready

I added into Rails 4.0 Application and it works well

unknown about 5 years ago
diaspora_federation-rails ready

It works

ready

Since 0.1.6

over 2 years ago
dogapi ready

In use, doesn't depend on Rails

unknown almost 6 years ago
dogstatsd-ruby ready

In use, doesn't depend on Rails

unknown almost 6 years ago
doorkeeper ready

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

ready

since version 4.0.0

about 3 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 3 years ago
dotiw ready

Appears to work for me. Haven't tested all cases, but so far, so good.

unknown over 5 years ago
drafting ready

see readme

ready

see readme

about 3 years ago
draftsman ready

README claims that it supports Rails 4.

unknown about 5 years ago
draper ready

-

ready

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

over 2 years ago
dynamoid ready

"Pushed Dynamoid 0.7.1, which should be compatible with Rails 4." https://github.com/Veraticus/Dynamoid/pull/142

unknown over 5 years ago
email_validator ready unknown about 6 years ago
emailvision ready

I'm the owner of this gem.

unknown almost 6 years 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 2 years ago
enumerize ready

Issue

unknown about 6 years ago
enumify ready

Travis CI tests added for Rails 4

unknown about 6 years ago