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

running in our 4.2 app

ready

Not dependent on Rails

7 months ago
strong_migrations ready

running on our 4.2 app for some time

ready

5.2 from v0.2.3 5.0 from v0.1.7

7 months ago
rainbow ready

not dependent on rails

ready

not dependent on rails

7 months ago
librato-rails ready

Running on our 4.2 app for some time

ready

5.0 support from v2.1.0

7 months ago
canonical-rails ready

running on our 4.2 app for some time

ready

5.2 from v0.2.3 5.1 from v0.2.0 5.0 from v0.1.1

7 months ago
jwt ready

Running on our 4.2 app for some time.

ready

Not dependent on rails

7 months 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

7 months ago
skylight ready

running in our 4.2 app for some time

ready

5.2 from v2.0.2 5.1 from v2.0.0 5.0 from v1.0.0

7 months ago
phonelib ready

running on our 4.2 app for some time

ready

v5.0/5.1 from v0.6.12

7 months ago
fog-aws ready

Running on our 4.2 app for some time

ready

Not dependent on Rails

7 months ago
writeexcel ready

Running on our 4.2 app for some time

ready

Not dependent on Rails

7 months ago
smarter_csv ready

running on our 4.2 app for some time

ready

Not dependent on Rails

7 months ago
font_assets ready

running on our 4.2 app for some time

ready

Not dependent on rails

7 months ago
pdftk-heroku ready

Running on our 4.2 app for some time

ready

Not dependent on Rails

7 months ago
migration-lock-timeout ready

running on our Rails 4.2 app for some time

ready

Rails 5 ready as at v1.1.0

7 months ago
scientist ready

Not dependent on Rails

ready

Not dependent on Rails

7 months ago
zendesk_api ready

Been working on our Rails 4.2 app for some time

ready

Not dependent on Rails

7 months ago
xeroizer ready

Been running on our 4.2 app for some time

ready

There is a closed "Not working on Rails 5" issue here: https://github.com/waynerobinson/xeroizer/issues/317 So i assume from this that it is now working on 5

7 months ago
virtus ready

Running for many years on our Rails 4 system

unknown

isn't being maintained any more by its original creator... some people are using it on rails 5, some people are putting up Rails5 issues for it, some people are using attribute instead...

7 months ago
omniauth-google-oauth2 ready

No direct Rails dependencies. Runs on our Rails 4.2 app

ready

No direct Rails dependencies. Probably 5-ready

7 months ago