Capistrano is a utility and framework for executing commands in parallel on multiple remote machines, via SSH.

Manipulate images with minimal use of memory via ImageMagick

Test your JavaScript without any framework dependencies, in any environment, and with a nice descriptive syntax. Jasmine for Ruby is deprecated. The direct replacment for the jasmine-core gem is the jasmine-core NPM package. If you are also using the jasmine gem, we recommend using the jasmine-b...

A generalized Rack framework for multiple-provider authentication.

A secure, non-evaling end user template engine with aesthetic markup.

A modern, highly customizable, and responsive Jekyll theme for documentation with built-in search.

Easy upload management for ActiveRecord

Renders and parses JSON/XML/YAML documents from and to Ruby objects. Includes plain properties, collections, nesting, coercion and more.

Parallel tests across CI server nodes based on each test file's time execution. It generates a test time execution report and uses it for future test runs.

RequestStore gives you per-request global storage.

memoize methods invocation

Daemons provides an easy way to wrap existing ruby scripts (for example a self-written server) to be run as a daemon and to be controlled by simple start/stop/restart commands. You can also call blocks as daemons and control them from the parent or just daemonize the current...

This gem is used by GitHub to render any fancy markup such as Markdown, Textile, Org-Mode, etc. Fork it and add your own!

A plain-Ruby implementation of GraphQL.

A high-level IO library that provides validation, type conversion, and more for command-line interfaces. HighLine also includes a complete menu system that can crank out anything from simple list selection to complete shells with just minutes of work.

Fluentd is an open source data collector designed to scale and simplify log management. It can collect, process and ship many kinds of data in near real-time.

A gem-authoring framework.

DSL for nested generic schemas with inheritance and refining.

Ruby wrapper for the OAuth 2.0 protocol

Uglifier minifies JavaScript files by wrapping UglifyJS to be accessible in Ruby