Kaminari is a Scope & Engine based, clean, powerful, agnostic, customizable and sophisticated paginator for Rails 4+

MessagePack is a binary-based efficient object serialization library. It enables to exchange structured objects between many languages like JSON. But unlike JSON, it is very fast and small.

Arel Really Exasperates Logicians Arel is a SQL AST manager for Ruby. It 1. Simplifies the generation of complex SQL queries 2. Adapts to various RDBMSes It is intended to be a framework framework; that is, you can build your own ORM with it, focusing on innovative object and collection modeli...

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...

ExecJS lets you run JavaScript code from Ruby.

CocoaPods manages library dependencies for your Xcode project. You specify the dependencies for your project in one easy text file. CocoaPods resolves dependencies between libraries, fetches source code for the dependencies, and creates and maintains an Xcode workspace to build your project. Ul...

Signet is an OAuth 1.0 / OAuth 2.0 implementation.

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

kaminari-core includes pagination logic independent from ORMs and view libraries

kaminari-activerecord lets your Active Record models be paginatable

kaminari-actionview provides pagination helpers for your Action View templates

Easy upload management for ActiveRecord

Net::SSH: a pure-Ruby implementation of the SSH2 client protocol. It allows you to write programs that invoke and interact with processes on remote servers, via SSH2.

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

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

The OS gem allows for some useful and easy functions, like OS.windows? (=> true or false) OS.bits ( => 32 or 64) etc"

A generalized Rack framework for multiple-provider authentication.

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

Simple mime type detection using magic numbers, filenames, and extensions

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.