How to download and setup hydra-element
Open terminal and run command
                                            git clone https://github.com/jdomizz/hydra-element.git
                                        
                                        git clone is used to create a copy or clone of hydra-element 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 hydra-element https://github.com/jdomizz/hydra-element/archive/master.zip
Or simply clone hydra-element with SSH
                                            [email protected]:jdomizz/hydra-element.git                                    
                                    If you have some problems with hydra-element
You may open issue on hydra-element support forum (system) here: https://github.com/jdomizz/hydra-element/issuesSimilar to hydra-element repositories
Here you may see hydra-element alternatives and analogs
storybook gpu.js polymer wired-elements skatejs relative-time-element polymer-bundler stylable diffhtml hybrids web-component-tester polymer-cli ng2-semantic-ui simpla vaadin-core bem-components ajax-form vue-ui-framework polyserve server-components statblock5e polymer-analyzer webcomponents.org web-components-todo gwt-polymer-elements lume CleverStyle-Framework polymer-skeleton awesome-stenciljs spring