The most popular PHP library for use with the Twitter OAuth REST API.
A lightweight and powerful OAuth 2.0 authorization and resource server library with support for all the core specification grants. This library will allow you to secure your API with OAuth and allow your applications users to approve apps that want to access their data from your API.
Open source social sign on PHP library.
OAuth2 Server for PHP
An OAuth 2.0 bridge for Laravel and Lumen
OAuth 2.0 Client Library
Laravel wrapper around OAuth 1 & OAuth 2 libraries.
Multi-provider authentication framework for PHP
Support for authenticating users using both OAuth1.0a and OAuth2 in Symfony2.
PHP 5.3+ oAuth 1/2 Library
An OAuth library written in PHP by @themattharris
Symfony2 OAuth Server Bundle
OAuth Service Provider for Laravel 4
Small and easy Twitter library for PHP
A PHP implementation of a SAML 2.0 service provider and identity provider, also compatible with Shibboleth 1.3 and 2.0.
Light PHP wrapper for the OAuth 2.0 protocol (based on OAuth 2.0 Authorization Protocol draft-ietf-oauth-v2-15)
External authentication via OAuth and OpenID for the Yii framework
A library to consume services using the OAuth 2 security scheme.
EAuth extension allows to authenticate users by the OpenID, OAuth 1.0 and OAuth 2.0 providers.
An OAuth firewall for Symfony2
Opauth plugin for CakePHP v2.x, allowing simple plug-n-play 3rd-party authentication with CakePHP
Authorize users in your application with multiple OAuth 1.0 providers
OAuth 1 PHP Library
LfjOpauth is a Zend Framework 2 module that enables support for many authentication providers through the Opauth framework.