Tire is a Ruby client for the Elasticsearch search engine/database. It provides Ruby-like API for fluent communication with the Elasticsearch server and blends with ActiveModel class for convenient usage in Rails applications. It allows to delete and create indices, define mapping for them, supports the bulk API, and presents an easy-to-use DSL for constructing your queries. It has full ActiveRecord/ActiveModel compatibility, allowing you to index your models (incrementally upon saving, or in bulk), searching and paginating the results. Please check the documentation at <http://karmi.github.com/retire/>.

We have deprecated the legacy Oso open source library. We have plans for the next open source release and we're looking forward to getting feedback from the community leading up to that point (please reach out to us in the Slack #help channel). In the meantime, if you're happy using the Oso open source library now, nothing needs to change – i.e., we are not end-of-lifing (EOL) the library and we'll continue to provide support and critical bug fixes. More context: [here](https://www.osohq.com/docs/oss/getting-started/deprecation.html).

PgSearch builds Active Record named scopes that take advantage of PostgreSQL's full text search

Composite key support for ActiveRecord

Map Redis types directly to Ruby objects. Works with any class or ORM.

Rake tasks to migrate data alongside schema changes.

Allows marking ActiveRecord objects as discarded, and provides scopes for filtering.

An intelligent layer for ActiveRecord (via Rails and Sinatra) for the Sphinx full-text search tool.

counter_culture provides turbo-charged counter caches that are kept up-to-date not just on create and destroy, that support multiple levels of indirection through relationships, allow dynamic column names and that avoid deadlocks by updating in the after_commit callback.

counter_culture provides turbo-charged counter caches that are kept up-to-date not just on create and destroy, that support multiple levels of indirection through relationships, allow dynamic column names and that avoid deadlocks by updating in the after_commit callback.

ActiveRecord SQL Server Adapter. SQL Server 2012 and upward.

A multithreaded, Postgres-based ActiveJob backend for Ruby on Rails

Dragonfly is a framework that enables on-the-fly processing for any content type. It is especially suited to image handling. Its uses range from image thumbnails to standard attachments to on-demand text generation.

Janky is a Continuous Integration server

This "acts_as" extension provides the capabilities for sorting and reordering a number of objects in a list. The class that has this specified needs to have a "position" column defined as an integer on the mapped database table. (Custom edition. Please use original gem)

Generates attr_accessors that encrypt and decrypt attributes transparently. This fork is for Ruby 1.9 and Rails 3 compatibility.

Squeel unlocks the power of Arel in your Rails application with a handy block-based syntax. You can write subqueries, access named functions provided by your RDBMS, and more, all without writing SQL strings. Supporting Rails 3 and 4.

Rails observer (removed from core in Rails 4.0)

Easily and efficiently make your ActiveRecord model support hierarchies

ActiveRecord connection adapter for PostGIS. It is based on the stock PostgreSQL adapter, and adds built-in support for the spatial extensions provided by PostGIS. It uses the RGeo library to represent spatial data in Ruby.