Vaadin 10 Java integration of Google Sign in -webcomponent https://github.com/GoogleWebComponents/google-signin To use this, you need Google Client Id, for instructions see: https://developers.google.com/identity/sign-in/web/sign-in (In short, you need to create an app in https://console.developers.google.com and get id from there, also if you want to use this in a real server, you need allow domain and prove that you own the domain, but in development at localhost, only the client id is enough)