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.
The most popular PHP library for use with the Twitter OAuth REST API.
Laravel wrapper around OAuth 1 & OAuth 2 libraries.
PHP Social Authentication Library
OAuth 2.0 Client 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.
Multi-provider authentication framework for PHP
Laravel Passport provides OAuth2 server support to Laravel.
PHP 5.3+ oAuth 1/2 Library
An OAuth library written in PHP by @themattharris
Symfony2 OAuth Server Bundle
A PHP implementation of a SAML 2.0 service provider and identity provider, also compatible with Shibboleth 1.3 and 2.0.
OAuth Service Provider for Laravel 4
External authentication via OAuth and OpenID for the Yii framework
OAuth 1.0 Client Library
Small and easy Twitter library for PHP
Access APIs protected by the oauth2 authentication scheme
Light PHP wrapper for the OAuth 2.0 protocol (based on OAuth 2.0 Authorization Protocol draft-ietf-oauth-v2-15)
A kick-ass PHP library to connect to third-party applications.
Implements Graph API and some of the OAuth facilities to operate with Facebook
A collection of OAuth 2 packages that extracts from laravel/socialite.
Someline Starter is a PHP framework for quick building Web Apps and Restful APIs, with modern design pattern foundation.