Is a gem ready for Rails 4 or 5?

Rails 4: 614 ready, 38 not ready, and 433 unknown
Rails 5: 161 ready, 11 not ready, and 913 unknown

Gems unknown for Rails 5

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

https://github.com/clyfe/acts_as_nested_interval/pull/6

unknown almost 6 years ago
acts_as_referred ready

gemspec notes ~> 4.0

unknown over 5 years ago
acts_as_revisionable unknown

https://github.com/bdurand/acts_as_revisionable/blob/master/README.rdoc

unknown over 4 years ago
acts_as_shellable unknown unknown almost 6 years ago
acts_as_taggable_on ready

Version >=3.x is compatible according the Read me info. https://github.com/mbleigh/acts-as-taggable-on

unknown about 5 years ago
acts_as_tenant ready

since version 0.3.1

unknown almost 6 years ago
acts_as_tree ready

Specified in the README - https://github.com/amerine/acts_as_tree/blob/master/README.md

unknown over 5 years ago
acts_as_votable ready

https://github.com/ryanto/acts_as_votable/pull/32

unknown over 5 years ago
add_relative_rails unknown unknown almost 6 years ago
after_commit unknown unknown almost 6 years ago
airbrake ready

since gem version 3.1.12, source

unknown over 3 years ago
alchemy_cms ready

The 3.0-dev branch is ready for Rails 4 https://github.com/magiclabs/alchemy_cms/tree/3.0-dev

unknown over 5 years ago
analytics-ruby ready

running on our 4.2 app for some time

unknown

Maybe ready? Not a direct dependency, but there is sometimes a conflict with oj gem... so it's possible that the dependencies are not 5-ready

3 months ago
ancestry ready unknown almost 6 years ago
angularjs-bootstrap-rails unknown unknown almost 6 years ago
annotate ready

It is compatible, but it does not correctly annotate namespaces models like profile::bla (source)

unknown over 5 years ago
annotator ready

https://github.com/tech-angels/annotator/commit/60827eb718d71e05eea05f63638252929b0dd02e

unknown over 5 years ago
announce_until unknown unknown almost 6 years ago
anoncms unknown unknown almost 6 years ago
ANTFARM unknown unknown almost 6 years ago