activerecord-jdbc-adapter by jruby

A gem to define virtual associations on Rails models. Maintained by onyxblade on GitHub, where it has earned 67 stars from the community.

Microscope adds useful scopes targeting ActiveRecord boolean, date and datetime fields. Maintained by mirego on GitHub, where it has earned 61 stars from the community.

Adds the ability to normalize attributes cleanly with code blocks and predefined normalizers. Maintained by mdeering on GitHub, where it has earned 472 stars from the community.