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.
Laravel wrapper around OAuth 1 & OAuth 2 libraries.
The most popular PHP library for use with the Twitter OAuth REST API.
OAuth 2.0 Client Library
PHP Social Authentication Library
OAuth2 Server for PHP
An OAuth 2.0 bridge for Laravel and Lumen
Support for authenticating users using both OAuth1.0a and OAuth2 in Symfony2.
Laravel Passport provides OAuth2 server support to Laravel.
Multi-provider authentication framework for PHP
PHP 5.3+ oAuth 1/2 Library
Symfony2 OAuth Server Bundle
An OAuth library written in PHP by @themattharris
A PHP implementation of a SAML 2.0 service provider and identity provider, also compatible with Shibboleth 1.3 and 2.0.
OAuth 1.0 Client Library
External authentication via OAuth and OpenID for the Yii framework
OAuth Service Provider for Laravel 4
Small and easy Twitter library for PHP
Light PHP wrapper for the OAuth 2.0 protocol (based on OAuth 2.0 Authorization Protocol draft-ietf-oauth-v2-15)
A collection of OAuth 2 packages that extracts from laravel/socialite.
Implements Graph API and some of the OAuth facilities to operate with Facebook
An OAUTH 2.0 Client Library
Access APIs protected by the oauth2 authentication scheme