High method and class churn has been shown to have increased bug and error rates. This gem helps you know what is changing a lot so you can do additional testing, code review, or refactoring to try to tame the volatile code.

This gem provides CodeMirror assets for your Rails application.

A ruby gem for validating credit card numbers

Array/Hash/Struct#dig backfill for ruby

GraphQL::SchemaComparator compares two GraphQL schemas given their SDL and returns a list of changes.

A ruby, zero-dependency, super small version of IP2Location LITE country lookups

IPAddress is a Ruby library designed to make manipulation of IPv4 and IPv6 addresses both powerful and simple. It mantains a layer of compatibility with Ruby's own IPAddr, while addressing many of its issues. This gem has link-local features - only published to get gem dep...

ISO 639-1 and ISO 639-2 language code entries and convenience methods.

JSON Object Signing and Encryption

Until there is a Kindle API, this will suffice.

Simple Rails & AWS Lambda Integration using Rack and various utilities.

Simplify deployment of your Puppet infrastructure by automatically pulling in modules from the forge and git repositories with a single command.

Adds a method to MiniTest that stubs any instance of a class.

A gem that calculates the exchange rate using published rates from open-exchange-rates. Compatible with the money gem.

Ruby Stats is a port of the statistics libraries from PHPMath. Probability distributions include binomial, beta, and normal distributions with PDF, CDF and inverse CDF as well as Fisher's Exact Test.

Simple Random Number Generator including Beta, Cauchy, Chi square, Exponential, Gamma, Inverse Gamma, Laplace (double exponential), Normal, Student t, Uniform, and Weibull. Ported from John D. Cook's C# Code.

SSRF Proxy is a multi-threaded HTTP proxy server designed to tunnel client HTTP traffic through HTTP servers vulnerable to HTTP Server-Side Request Forgery (SSRF).

Statsig server SDK for feature gates and experimentation in Ruby

Distributed locks (mutexes & semaphores) using Memcached or Redis.

ThumbsUp provides dead-simple voting capabilities to ActiveRecord models with karma calculation, a la stackoverflow.com.