Like FileUtils, but provides zip, unzip, bzip2, bunzip2, tar, untar, sed, du, md5sum, shasum, cut, head, tail, wc, unix2dos, dos2unix, iconv, curl, perl, etc.

Minimalist validation matcher

Shopify Experiments classes

Query Vertica with ruby

Rails way to harness the power of SQL "EXISTS" statement

Simple, dependency-free Wilson score

Wolverine provides a simple way to run server-side redis scripts from a rails app

ActiveRecord/Rails Integration for the Workflow library. Workflow is a finite-state-machine-inspired API for modeling and interacting with what we tend to refer to as 'workflow'.

Rails mail_to helper with encoding (removed from core in Rails 4.0)

Parses templates for render calls and uses them to precompile

Wrapper over Rails Event Store with conventions and transparent Rails integration

Backported from Rails 5.0 to use with 4.x versions

Rails ActiveRecord connector for Google Spanner Database

This gem is only needed before Rails 7.1, where the trilogy adapter is built in. When you upgrade to a version after 7.1.a, replace this with `gem "trilogy"` to ensure that trilogy itself is available.

Generate 'Add To Calendar' URLs for Android, Apple, Google, Hey, Office 365, Outlook, Outlook.com and Yahoo calendars

Clarify your dependencies by adding a detailed comment to each line in Gemfile specifying the gem's summary and its website if any.

Extension for ActiveRecord that adds support for PostgreSQL array columns, mapping string values to integers.

Wraps CanCan and RoleModel up to make role based authorisation really easy in Rails 3.x.

Implementation of the circuit breaker pattern in Ruby

Easy access to the Climate Data operators of MPI (https://code.mpimet.mpg.de/projects/cdo)