Is a gem ready for Rails 4 or 5?

Rails 4: 583 ready, 38 not ready, and 435 unknown
Rails 5: 95 ready, 10 not ready, and 951 unknown

Gems unknown for Rails 4

Name Status Rails 4 Notes Rails 4 Status Rails 5 Notes Rails 5 Status or notes updated
acts_as_shellable unknown unknown over 5 years ago
add_relative_rails unknown unknown over 5 years ago
after_commit unknown unknown over 5 years ago
angularjs-bootstrap-rails unknown unknown over 5 years ago
announce_until unknown unknown over 5 years ago
anoncms unknown unknown over 5 years ago
ANTFARM unknown unknown over 5 years ago
appreset unknown unknown over 5 years ago
ar_after_transaction unknown unknown over 5 years ago
arqueue unknown unknown over 5 years ago
ar_validation_extensions unknown unknown over 5 years ago
Ascii85 unknown

Not known

unknown almost 5 years ago
auditor_with_tenancy unknown unknown over 5 years ago
authmonk unknown unknown over 5 years ago
autogrid unknown unknown over 5 years ago
awesome_nested_fields unknown

initial listing

unknown about 5 years ago
babelyoda unknown unknown over 5 years ago
babilu unknown unknown over 5 years ago
backlog unknown unknown over 5 years ago
badges_engine unknown unknown over 5 years ago