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 unknown for Rails 4

Name Status Rails 4 Notes Rails 4 Status Rails 5 Notes Rails 5 Status or notes updated
token unknown unknown about 6 years ago
toppings_rails unknown unknown about 6 years ago
topquiz unknown unknown about 6 years ago
to_spreadsheet unknown unknown over 1 year ago
transaction-retry unknown unknown about 6 years ago
transitions-thinknear unknown unknown about 6 years ago
truncate_html unknown unknown about 6 years ago
tvdeyen-handles_sortable_columns unknown unknown about 6 years ago
typecalc unknown unknown about 6 years ago
ui-alchemy-rails unknown unknown about 6 years ago
unknown_v01_licenses unknown unknown about 6 years ago
unsemantic_rails unknown unknown about 6 years ago
upify unknown unknown about 6 years ago
upload_progress unknown unknown about 6 years ago
utopiadata unknown unknown about 6 years ago
vagrant-butcher unknown unknown about 6 years ago
vagrant-cachier unknown unknown about 6 years ago
validates_as_mobile unknown unknown about 6 years ago
valid_email unknown unknown about 6 years ago
vcr unknown unknown about 6 years ago