If string, numeric, symbol and nil values wanna be a boolean value, they can with the new #to_b method (and more).

RSpec and Minitest matchers to prevent N+1 queries problem

Fastest Json parser for Ruby, wrapper for simdjson

Implementation of the repository pattern for ActiveRecord, splitting domain model and persistence classes

Code smell detector for Ruby

Log outgoing HTTP requests in ruby

pg_search builds ActiveRecord named scopes that take advantage of PostgreSQL’s full text search

The Shadow of a Ruby Object lets you See and Manipulate its Instance Variables and Methods

🃏🗑 Soft deletes for ActiveRecord done right

This gem sanitizes the given string.

Better Rails Enumerations

Automated API documentation from Rspec

💖💻 A little dashboard that tries to take care of you when you're using your terminal.

Ruby on Rails support for Stormpath

Ruby SDK for the Stormpath User Management and Authentication REST+JSON API

Efficient bulk inserts with ActiveRecord

Official Geokit plugin for Rails/ActiveRecord. Provides location-based goodness for your Rails app. Requires the Geokit gem.