The best solution for store global settings in Rails applications. This gem will managing a table of а global key, value pairs easy. Think of it like a global Hash stored in your database, that uses simple ActiveRecord like methods for manipulation. Keep track of any global setting that you dont want to hard code into your rails app. You can store any kind of object. Strings, numbers, arrays, or any object.

Monitors Ruby apps and reports detailed metrics on performance to Scout.

Extends ActiveRecord#explain with support for EXPLAIN ANALYZE and output formats of JSON, XML, and YAML.

Identify database issues before they hit production.

AR-JDBC is a database adapter for Rails' ActiveRecord component designed to be used with JRuby built upon Java's JDBC API for database access. Provides (ActiveRecord) built-in adapters: MySQL, PostgreSQL and SQLite3 as well as adapters for popular databases such as Oracle, SQLServer, DB2, FireBird and even Java (embed) databases: Derby, HSQLDB and H2. It allows to connect to virtually any JDBC-compliant database with your JRuby on Rails application.

This Gem adds useful methods to your Rails app to validate, display and save phone numbers.

Profile RSpec test suites

UNIONs in ActiveRecord! Adds proper union and union_all methods to ActiveRecord::Relation.

Automatically eager loads Rails associations as associations are traversed

ranked-model is a modern row sorting library built for Rails 4.2+. It uses ARel aggressively and is better optimized than most other libraries.

Migrate large tables without downtime by copying to a temporary table in chunks. The old table is not dropped. Instead, it is moved to timestamp_table_name for verification.

Nearest neighbor search for Rails

Simple (but safe) token authentication for Rails apps or API with Devise.

Alchemy is a powerful, userfriendly and flexible Rails CMS.

Migrate large tables without downtime by copying to a temporary table in chunks. The old table is not dropped. Instead, it is moved to timestamp_table_name for verification.

RGeo is a geospatial data library for Ruby. RGeo::ActiveRecord is an optional RGeo module providing some spatial extensions to ActiveRecord, as well as common tools used by RGeo-based spatial adapters.

Ridgepole is a tool to manage DB schema. It defines DB schema using Rails DSL, and updates DB schema according to DSL.

Persistent event repository implementation for RubyEventStore based on ActiveRecord. Ships with database schema and migrations suitable for PostgreSQL, MySQL ans SQLite database engines. Includes repository implementation with linearized writes to achieve log-like properties of streams on top of SQL database engine.

Action caching for Action Pack (removed from core in Rails 4.0)

Adds extended functionality to Activerecord Postgres implementation