This 'acts_as' extension provides multi-table inheritance for rails models.

Rails plugin that adds powerful full text search capabilities to ActiveRecord models.

acts_as_xlsx lets you turn any ActiveRecord::Base inheriting class into an excel spreadsheet. It can be added to any finder method or scope chain and can use localized column and sheet names with I18n.

An easy way to include external video services in a rails app. This gem provides you wrappers for the most common video services, such as Youtube, Vimeo, Flickr, and so on...

ActsAsBookable is a reservation engine for Rails applications that allows resources to be booked. You can define availability rules for bookable models and set costraints to implement different types of booking (hotels, theaters, meeting rooms...)

*Atomic archiving/unarchiving for ActiveRecord-based apps* We had the problem that acts_as_paranoid and similar plugins/gems always work on a record by record basis and made it very difficult to restore records atomically (or archive them, for that matter). Because the archive and unarchive met...

Simple tagging gem for Rails using postgres array.

Scrivener removes the validation responsibility from models and acts as a filter for whitelisted attributes.

Represent ActiveRecord Markdown, Textile, RDoc columns as Markdown, Textile, RDoc objects using various external libraries to convert to HTML.

version_fu helps version your ActiveRecord models. It is based on Rick Olson's acts_as_versioned and is compatible with Rails 3.

This gem adds full text search capabilities and many other nifty features from Apache Solr to any Rails model.

Simulate multi-table inheritance for activerecord models using a polymorphic association

This middleware acts as a spam trap. It inserts, into every outputted <form>, a text field that a spambot will really want to fill in, but is actually not used by the app. The field is hidden to humans via CSS, and includes a warning label for screenreading software.

Use Youtube-Like ID in ActiveRecord seamlessly.

Gem version of acts_as_list Rails plugin.

ActsAsTextcaptcha provides spam protection for Rails models with text-based logic question captchas. Questions are fetched from Rob Tuley's textcaptcha.com They can be solved easily by humans but are tough for robots to crack.

ScheduleFu allows scheduling events with dates and times. It includes both the model and view portions of a calendar. It borrow heavily from acts_as_calendar (http://github.com/dball/acts_as_calendar) and calendar_helper (http://github.com/topfunky/calendar_helper).

Typical paranoid gem built for Rails 4 and with the minimum code needed to satisfy acts_as_paranoid's API

Omnes is a Ruby library implementing the publish-subscribe pattern. This pattern allows senders of messages to be decoupled from their receivers. An Event Bus acts as a middleman where events are published while interested parties can subscribe to them.

Flexible, configurable, and easy to use with the defaults. Supports 3 different ways to manage rating statistics.