hyrax
                                Hyrax is a Ruby on Rails Engine built by the Samvera community. Hyrax provides a foundation for creating many different digital repository applications.
                            
                        How to download and setup hyrax
Open terminal and run command
                                            git clone https://github.com/samvera/hyrax.git
                                        
                                        git clone is used to create a copy or clone of hyrax 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 hyrax https://github.com/samvera/hyrax/archive/master.zip
Or simply clone hyrax with SSH
                                            [email protected]:samvera/hyrax.git                                    
                                    If you have some problems with hyrax
You may open issue on hyrax support forum (system) here: https://github.com/samvera/hyrax/issuesSimilar to hyrax repositories
Here you may see hyrax alternatives and analogs
rails discourse gitlabhq devise diaspora spree activeadmin kaminari simple_form factory_bot classroom textbook-curriculum github-ds diplomat awesome-opensource-apps acts_as_api browserify-rails mumuki-laboratory react-rails brakeman octicons mailcatcher cancancan administrate refinerycms simplecov webpacker suspenders buffalo graphql-ruby