Weighted majority voting system for qualitative (categorical) items (i.e.assuming the set of decision has no natural ordering). As a measure of the quality of the consensus/inter-agreement, you can choose between a weighted variant of fleiss Kappa (by default) or the entropy of the vote distribution

Handles Message sending between ActiveRecord instances

Make cache methods on ActiveRecord easy!

A fairly trivial plugin allowing easy serialisation of Money values (from the money gem) as attributes on activerecord objects

Store multilingual columns in JSON

An ActiveRecord plugin for multi-tenant databases

The acts_as_nested_by class method add 3 instance methods to the model. nested_by_nesting_model=(flag) sets the nesting_model nested_by_nesting_model returns true if nested_by nesting_model nested_by_nesting_model? alias for nested_by_nesting_model

This Ruby on Rails acts_as extension provides the capabilities for creating a nice url based on an attribute of the current object. You can set / unset the object id in front of the URL and choose the object attribute to use to generate the URL.

It allows to handle JSON and JSONB fields as if they are proper database columns, handling default values, type casting and easier validation.

acts_as_notifier is an add-on for ActiveRecord models used to notify users of new and updated records via ActionMailer emails. The notifications can be make conditional and recipient lists can be specified at runtime using a proc or method name. acts_as_notifier can be configured to send emails via DelayedJob.

Acts As OQGraph allows ActiveRecord models to use the fast and powerful OQGraph engine for MYSQL.

Active Record (~>3.2) plugin which allows you to hide and restore records without actually deleting them. Check its GitHub page for more in-depth information.

Combines `acts-as-dag` and `rails3_acts_as_dag` to order model instances in a polymorphic directed acyclic graph and to be able to retrieve connections deleted in the past.

Because most percentages only need to be accurate to two decimals, this gem has you store them as basis points and does the conversion for you.

This gem allows you to have ordered models. It is like the old acts_as_list, but very lightweight and with an optimized SQL syntax.

Enforces presenter pattern for Rails projects

This 'acts_as' extension provides the capability for having previous next methods for object. Previous & next are based on a specified column (default is id).

Acts as priceable

ActsAsProtocolable is the easiest way to protocol user activity inside your Rails admin interface.

Gem version of acts_as_rdf Rails plugin