Is a gem ready for Rails 4 or 5?

Rails 4: 574 ready, 37 not ready, and 436 unknown
Rails 5: 76 ready, 8 not ready, and 963 unknown

Gems not ready for Rails 5

Name Status Rails 4 Notes Rails 4 Status Rails 5 Notes Rails 5 Status or notes updated
dynamic_form not ready

See Leslie's comment below

not ready

See Leslie's comment below

over 1 year ago
godmin ready

ok

not ready

https://github.com/varvet/godmin/issues/193

about 1 year ago
redis-rails ready

_

not ready

https://github.com/redis-store/redis-rails/issues/30

about 1 year ago
refile ready

Works perfectly

not ready

Not compatible with Rack 2

over 1 year ago
socialization ready

since version 1.0.1

not ready

-

5 months 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

about 1 year ago
validates_timeliness ready

Since version 4.0, see https://github.com/adzap/validates_timeliness/blob/master/CHANGELOG.rdoc#400-2015-12-29

not ready

see https://github.com/adzap/validates_timeliness/issues/143

6 months ago
workflow ready

since gem version 1.1.0

not ready

see README

4 months ago