A ready-to-use CodeIgniter skeleton with tons of new features
Authentication for Django Rest Framework
This Django User Model is customised user model
Easy to use, but powerful deployment tool using FTP and/or SFTP/SCP
Create a centralized Authentication and Authorization token server
Provides user management for your Symfony project
Use GitHub teams to manage system user accounts and authorized_keys
A LDAP User Management System
Laravel with user authentication, registration with email confirmation
Laravel Impersonate is a plugin to authenticate as your users