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 5

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

Built for Rails >= 4.1

ready

Added explicit support for Rails 5.

over 3 years ago
activeadmin ready

since gem version 1.0.0

ready

since gem version 1.0.0

over 2 years ago
activeldap ready

since version 4.0.0

ready

Supports Rails 5.1.0 and 5.2.0 since releases 5.1.0 and 5.2.0

6 months ago
active_link_to ready

Works for me!

ready

See README

4 months ago
active_model_serializers ready

-

ready

from https://rubyplus.com/articles/4021-ActiveModelSerializer-Basics-in-Rails-5

over 1 year ago
activerecord-import ready

Use activerecord-import 0.4.0 or higher.

source

ready

since version 0.15.0 (https://github.com/zdennis/activerecord-import/blob/master/CHANGELOG.md#changes-in-0150)

over 2 years ago
activerecord-session_store ready

version 0.0.1 is ready

ready

since gem version 1.0.0

about 3 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

about 3 years ago
active_scaffold ready

ready from gem version 3.4.0 (source)

ready

with the master branch

almost 2 years ago
acts_as_list ready

pull request for Rails 4 compatibility is closed

ready

from gem version 0.7.5

8 months ago
acts_as_paranoid ready

See comment of jonty davis below

ready

0.5.0

about 3 years ago
acts-as-taggable-on ready

since version 2.4.1

ready

since version 4.0.0

about 3 years ago
addressable ready

no dependency on Rails

ready

no dependency on Rails

almost 2 years ago
administrate ready

ok

ready

from https://github.com/thoughtbot/administrate/pull/636

almost 3 years ago
attr_encrypted ready

See Jason's comment below

ready

since version 3.0.2

about 3 years ago
audited ready

-

ready

from gem version 4

over 1 year ago
audited-activerecord ready

since gem version 4.1

ready

from gem version 4

over 1 year ago
authlogic ready

now working. if there are issues, provide the following in your gemfile:

gem 'authlogic', github: 'binarylogic/authlogic', ref: 'e4b2990d6282f3f7b50249b4f639631aef68b939'

ready

Since gem version 3.6.0, see https://github.com/binarylogic/authlogic/blob/9340a93541f2fdc92c1fa569f74be9a5deed2e14/CHANGELOG.md#360-2017-04-28

almost 2 years ago
awesome_nested_set ready

master branch

ready

since gem version 3.1

6 months ago
axlsx_rails ready

July 13th, 2015: 0.4.0 release

Support for Rails 4.2

ready

https://github.com/straydogstudio/axlsx_rails/blob/master/CHANGELOG.md

July 26st, 2016: 0.5.0 release

Support for Rails 5

5 months ago