You can also look up for these other topics:
Framework
Coding Standards
Boilerplate
CMS
Tool
Security
Hacktoberfest
Easy integration with OAuth 2.0 service providers.
thephpleagueLaravel 8 with user authentication, registration with email confirmation, social media authentication, password recovery, and captcha protection. Uses offical [Bootstrap 4](http://getbootstrap.com). T
jeremykenedyJWT authentication for your Symfony API
lexikOAuth client integration for Symfony. Supports both OAuth1.0a and OAuth2.
hwiSimpleSAMLphp is an application written in native PHP that deals with authentication.
simplesamlphp