Software for JavaScript
Ember.js
Ember.js is a productive, battle-tested JavaScript framework for building modern web applications. It includes everything you need to build rich UIs that work on any device. With Ember.js you can create client side JavaScript applications with a complete solution which contains data management and an application flow. Ember.js is developed and released as free and open source software under the MIT License.
Sapper
Sapper is a free and open source application framework for Svelte. With Sapper developers can build server-side rendered applications that does not compromise on SEO, load times or progressive enhancement. Your Sapper app will handle navigation instantaneously, much like any other SPA.
Apollo Server
Apollo Server is an open-source, spec-compliant GraphQL server written in JavaScript for Node.js eco-system. Apollo Server is compatible with any GraphQL client, including the sister project Apollo Client. With Apollo Server it's easy to build production-ready, self-documenting GraphQL APIs that can use data from any source. Allowing solo developers and larger teams to get a stand-alone GraphQL server, including in a serverless environment, up and running faster.
Express.js
Express.js is a free and open-source web application framework for Node.js, released as free and open-source software under the MIT License. Express is designed for building fast web applications and APIs. In the Node.js community the Express framework is seen as the defacto standard when it comes to building such applications. The philosophy of the framework is to provide a small and robust toolset for building HTTP servers with JavaScript and Node.js. Express does not force you to use any specific database, ORM or templating language, as it leaves that up to you as a developer, to maximize freedom and choice. Express.js is used by companies and hobby developers alike to build single page JavaScript applications, websites, hybrids and public HTTP APIs.
JungleJS
JungleJS is a free and open-source static site framework for Svelte. JungleJS generates completely static code that doesn't have to be hydrated into a single page application, or SPA.
Nuxt.js
Nuxt.js is an intuetive Vue framework that supports generating a static website based on your Vue application. It provides the best of both worlds, as you don't need a server, yet can reap the SEO benefits. Nuxt achives this by pre-rendering all pages and include the necessary HTML. And when you are ready to deploy, Nuxt.js got you covered with simple integrations to serverless and third-party providers such as Netlify, Vercel and GitHub pages.
Reaction Commerce
Reaction Commerce is an open-source, headless, API-first, and modular commerce stack made for ambitious brands and retailers. Reaction’s service-based architecture is built to deliver flexibility and freedom at scale.
HubPress
HubPress is a free and open-source static site generator written in JavaScript, powered by Vue.js, Asciidoctor and GitHub. All you need to create a static site with HubPress is a free GitHub account, no servers or subscriotion fees. To setup HubPress you simply fork the hubpress.io repository, update the config file and you are ready to start your blog. HubPress uses the free hosting provided by GitHub Pages to achive zero hosting cost.
React
React is a free an open-source Javascript framework for frontend development. With React you can build powerful, component-based application that supports compilation of JSX, ES6 and auto-prefixed CSS files. The popular framework is developed by Facebook and used by countless of applications across the web and mobile devices to build structured user interfaces or UI components.