Color is a Ruby library to provide basic RGB, CMYK, HSL, and other colourspace manipulation support to applications that require it. It also provides 152 named RGB colours (184 with spelling variations) that are commonly supported in HTML, SVG, and X11 applications. A technique for generating monochromatic contrasting palettes is also included. The Color library performs purely mathematical manipulation of the colours based on colour theory without reference to colour profiles (such as sRGB or Adobe RGB). For most purposes, when working with RGB and HSL colour spaces, this won't matter. Absolute colour spaces (like CIE L*a*b* and XYZ) and cannot be reliably converted to relative colour spaces (like RGB) without colour profiles. Color 1.8 adds an alpha parameter to all <tt>#css_rgba</tt> calls, fixes a bug exposed by new constant lookup semantics in Ruby 2, and ensures that <tt>Color.equivalent?</tt> can only be called on Color instances. Barring bugs introduced in this release, this (really) is the last version of color that supports Ruby 1.8, so make sure that your gem specification is set properly (to <tt>~> 1.8</tt>) if that matters for your application. This version will no longer be supported one year after the release of color 2.0.

Phone number validation

Use the GraphiQL IDE for GraphQL with Ruby on Rails. This gem includes an engine, a controller and a view for integrating GraphiQL with your app.

Simple Ruby rate limiting mechanism.

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

Extract as much much detail as you want from GraphQL queries, served up from your Ruby app and the `graphql` gem. Compatible with the `graphql-batch` gem, to extract batch-loaded fields resolution timings.

Adds Minitest as the default testing library in Rails

A collection of extensions and developer tools for ViewComponent

Check and verify in-app receipts

A stats collection and distributed tracing framework

Helps to save your eyes, when reading hardcore SQL requests in console

A pure Ruby implementation of a useful subset of Prolog.

Rails ActiveRecord connector for Google Spanner Database

Active Record adapter for https://github.com/trilogy-libraries/trilogy.

The appengine gem is a set of classes, plugins, and tools for integration with Google App Engine. It provides access to the App Engine runtime environment, including logging to the Google Cloud Console and interrogation of hosting properties. It also provides Rake tasks for managing your App Engine application, for example to run production maintenance commands such as database migrations. This gem is NOT required to deploy your Ruby application to App Engine.

Configurations provides a unified approach to do configurations with the flexibility to do everything from arbitrary configurations to type asserted configurations for your gem or any other ruby code.

GirFFI creates bindings for GObject-based libraries at runtime based on introspection data provided by the GObject Introspection Repository (GIR) system. Bindings are created at runtime and use FFI to interface with the C libraries. In cases where the GIR does not provide enough or correct information to create sane bindings, overrides may be created.

Scalable Rails Background Processing with AWS Lambda & SQS.

<tt>minitar-cli</tt> is a pure-Ruby command-line tool that uses {minitar}[https://github.com/halostatue/minitar] to provide a command-line tool, +minitar+, for working with POSIX tar(1) archive files.

Stackdriver exporter for OpenCensus