Next-gen identity server with Ory-hardened authentication
Provides user management for your Symfony project
Laravel with user authentication, registration with email confirmation
Admidio is a free open source user management system for websites
Easy to use, but powerful deployment tool using FTP and/or SFTP/SCP
Authorization, Authentication and User Management library
A ready-to-use CodeIgniter skeleton with tons of new features
PHP Script which provides secure login, registration, user management,
Sita Access Manager (SAM) is php based Login System.