How to download and setup connect
Open terminal and run command
                                            git clone https://github.com/symfonycorp/connect.git
                                        
                                        git clone is used to create a copy or clone of connect repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with connect https://github.com/symfonycorp/connect/archive/master.zip
Or simply clone connect with SSH
                                            [email protected]:symfonycorp/connect.git                                    
                                    If you have some problems with connect
You may open issue on connect support forum (system) here: https://github.com/symfonycorp/connect/issuesSimilar to connect repositories
Here you may see connect alternatives and analogs
devise classroom symfony grav jwt-auth ilios login-with play-authenticate Simplicity socialite Git-Credential-Manager-for-Windows EasyAdminBundle NelmioApiDocBundle SensioFrameworkExtraBundle LexikJWTAuthenticationBundle VichUploaderBundle DoctrineMigrationsBundle framework-bundle LiipImagineBundle FOSElasticaBundle SncRedisBundle KnpMenuBundle twig-bundle swiftmailer-bundle security-bundle web-profiler-bundle NelmioCorsBundle CraueFormFlowBundle SensioGeneratorBundle web-server-bundle