ruby-plsql gem provides simple Ruby API for calling Oracle PL/SQL procedures. It could be used both for accessing Oracle PL/SQL API procedures in legacy applications as well as it could be used to create PL/SQL unit tests using Ruby testing libraries.

SQL input/output plugin for Fluentd event collector

Fast fuzzy string matching for rails

Provides support for using versioning gems such as PaperTrail with Globalize.

Adds typed hstore backed fields to an ActiveRecord model (FORK).

fork of hstore accessor that supports rails 5 .

Shield sensitive data in Postgres and MySQL

Likeable allows you to make your models...well...likeable using redis.

A phishing kit collector for scavengers

Push your Active Record models' scopes up to the surface

RoleCore is a Rails engine which could provide essential industry of Role-based access control.

#set(), speed-up your specs

Provides enhancements to ActiveRecord to handle spatial datatypes in PostgreSQL and MySQL.

Add support for master/slave database database clusters in ActiveRecord to improve performance.

Log transitions on a state machine to support auditing and business process analytics.

A gem that provides a client interface for getstream.io

ActiveRecord/Mongoid enums with i18n

Set transaction isolation level in the ActiveRecord in a database agnostic way. Works with MySQL, PostgreSQL and SQLite as long as you are using new adapters mysql2, pg or sqlite3. Supports all ANSI SQL isolation levels: :serializable, :repeatable_read, :read_committed, :read_uncommitted.

Universal ID opens the flood gates with a deluge of profoundly powerful yet easily implemented new use-cases for your apps and scripts.

Amazon Redshift _makeshift_ adapter for ActiveRecord 4.