http://pwabuilder.com/ Microsoft tool to create PWAs from websites compatible with all the platforms and also to package a PWA launcher for the Microsoft Store.
Service Workers Recipes
https://serviceworke.rs List of recipes and snippets to apply to service workers.
App Manifest Generator
https://app-manifest.firebaseapp.com/ A very useful online tool that will enable you to generate the web app manifest and all icon versions.
https://developers.google.com/web/tools/ workbox Framework to code PWAs and service workers with a simple to use API.
https://developers.google.com/web/tools/ lighthouse/ Open-source tool to report on your PWA’s performance and certain metrics to assess the effectiveness of the app-like experience it creates.
https://sonarwhal.com/ Open-source linter for the web platform that includes PWA checks.
https://webmaxru.github.io/progressiveweb-apps-logo/ The PWA logo was generated and voted for by the community and as a result it’s now used as the standard logo for PWAs; you can download it here or go about generating your own version.
https://capacitor.ionicframework.com A packager for native PWAs for Android, iOS and desktop OSs.