Generic OAuth strategy for OmniAuth

https://github.com/omniauth/omniauth-oauth

Abstract OAuth2 strategy for OmniAuth

https://github.com/omniauth/omniauth-oauth2

Abstract OAuth2 strategy for OmniAuth

https://github.com/omniauth/omniauth-oauth2

OpenID strategy for OmniAuth

https://github.com/ruby-openid/omniauth-openid

OmniAuth strategy for salesforce.com

https://github.com/realdoug/omniauth-salesforce

OmniAuth strategy for Twitter

https://github.com/arunagw/omniauth-twitter

Generalized Rack framework for multiple-provider authentication

https://github.com/omniauth/omniauth

OpenID Connect Strategy for OmniAuth

https://github.com/m0n9oose/omniauth_openid_connect

Easy-to-use wrapper for Net::HTTP, Net::HTTPS and Net::FTP

https://github.com/ruby/open-uri

OpenURI with transparent disk caching

https://github.com/tigris/open-uri-cached

OpenGL wrapper for Ruby

https://github.com/larskanis/opengl

OpenID Connect Server & Client Library

https://github.com/nov/openid_connect

Libraries needed to talk to OpenNebula

https://opennebula.io/ https://github.com/OpenNebula/one

Implementation of RFC 3610 - Counter with CBC-MAC (CCM)

https://github.com/SmallLars/openssl-ccm

Implementation of RFC 4493, 4494, 4615 - AES-CMAC Algorithm

https://github.com/SmallLars/openssl-cmac

Command-line option parser for Ruby

https://www.manageiq.org/optimist/ https://github.com/ManageIQ/optimist

Client library for Puppet orchestration services

https://github.com/puppetlabs/orchestrator_client-ruby

Allows for some useful and easy functions

https://github.com/rdp/os

Class to build custom data structures, similar to a Hash

https://github.com/ruby/ostruct

Mid-level packet manipulation library for Ruby

https://github.com/packetfu/packetfu

Network packet manipulation library

https://github.com/lemontree55/packetgen

Soft deletion mapper for activerecord

https://github.com/rubysherpas/paranoia

Parse cron expressions and calculates the next occurence

https://github.com/siebertm/parse-cron

Ruby parser written in pure Ruby

https://github.com/whitequark/parser

Ruby HTTP client library based on libcurl

https://toland.github.io/patron/ https://github.com/toland/patron

Ruby library to render PDF documents

https://prawnpdf.org/ https://github.com/prawnpdf/pdf-core

Ruby library to render PDF documents

https://prawnpdf.org/ https://github.com/prawnpdf/pdf-core

Ruby interface to PostgreSQL library

https://github.com/ged/ruby-pg

Fast PostreSQL array parsing

https://github.com/dockyard/pg_array_parser

Performance dashboard for Postgres

https://github.com/ankane/pghero

Performance dashboard for Postgres

https://github.com/ankane/pghero

pkg-config implementation for Ruby

https://github.com/ruby-gnome/pkg-config

Simple Ruby client library for PuppetDB API

https://rubygems.org/gems/pl-puppetdb-ruby

Almost-pure-ruby PNG library

https://www.zenspider.com/projects/png.html https://github.com/seattlerb/png

Provides a registry of file types

https://github.com/cjheath/polyglot

PostgreSQL data types extension for ActiveRecord

https://github.com/dockyard/postgres_ext

Fast, tiny, and nimble PDF generator for Ruby

https://prawnpdf.org/ https://github.com/prawnpdf/prawn

Fast, tiny, and nimble PDF generator for Ruby

https://prawnpdf.org/ https://github.com/prawnpdf/prawn

Prime numbers and factorization library

https://github.com/ruby/prime

Check address for private network (RFC 1918)

https://github.com/jtdowney/private_address_check

Compresssor and decompressor for HTTP 2.0 HPACK

https://socketry.github.io/protocol-hpack/ https://github.com/socketry/protocol-hpack

Provides abstractions to handle HTTP protocols

https://socketry.github.io/protocol-http/ https://github.com/socketry/protocol-http

Provide abstractions for working with URLs

https://socketry.github.io/protocol-url/ https://github.com/socketry/protocol-url

Add HTTP or SOCKS proxies support and force TCPSocket to use proxies

https://github.com/samuelkadolph/ruby-proxifier

Add HTTP or SOCKS proxies support and force TCPSocket to use proxies

https://github.com/chef/ruby-proxifier

YAML parser and emitter

https://github.com/ruby/psych

Ruby domain name parser based on the Public Suffix List

https://github.com/weppos/publicsuffix-ruby

PuppetDB CLI Tooling

https://github.com/puppetlabs/puppetdb-cli

Simple Authentication and Security Layer

https://github.com/pyu10055/ruby-sasl

Qiniu Resource (Cloud) Storage SDK for Ruby

https://github.com/qiniu/ruby-sdk