Hotwire is an alternative approach to building modern web applications without using much JavaScript by sending HTML instead of JSON over the wire. This makes for fast first-load pages, keeps template rendering on the server, and allows for a simpler, more productive development experience in any programming language, without sacrificing any of the speed or responsiveness associated with a traditional single-page application.

Inertia.js lets you quickly build modern single-page React, Vue and Svelte apps using classic server-side routing and controllers.

A javascript metaframework

Build micro frontends that coexist and can each be written with their own framework. This allows you to:

• Use multiple frameworks on the same page without refreshing the page (React, AngularJS, Angular, Ember, or whatever you're using)
• Write code using a new framework, without rewriting your existing app
• Lazy load code for improved initial load time.
• Hot reload entire chunks of your overall application (instead of individual files)

Ember.js is an open-source JavaScript web framework, based on the Model–view–viewmodel (MVVM) pattern. It allows developers to create scalable single-page web applications by incorporating common idioms and best practices into the framework.