Open Source Software for Node.js
Electron
Electron is a framework that lets you build cross-platform desktop apps with JavaScript, HTML, and CSS. It takes care of the hard parts of building native software, so that you can focus on the core purpose of your application.
Total.js
Total.js is a free and open-source framework for Node.js platform written in pure JavaScript. The framework share many similarities with other giants like PHP's Laravel, Python's Django and ASP.NET MVC. Developers use Total.js to build modern web, desktop and IoT applications.
Koa
Koa is a free and open-source, expressive HTTP middleware framework for Node.js. Koa provides a great developer experience that makes writing web applications and APIs more enjoyable. Koa's middleware stack flows in a stack-like manner, allowing you to perform actions downstream then filter and manipulate the response upstream. Only methods that are common to nearly all HTTP servers are integrated directly into Koa's small codebase. This includes things like content negotiation, normalization of node inconsistencies, redirection, and a few others.
KeystoneJS
KeystoneJS is an open source JavaScript & Node.js framework that make build database-driven websites and web applications. Under the hood, KeystoneJS uses the express.js web server framework, and a MongoDB database via the mongoose object modelling framework.
Hapi
Build powerful, scalable applications, with minimal overhead and full out-of-the-box functionality with Hapi. It's a free and open-source JavaScript framework for Node.js that is developed for enterprise-grade applications. Companies like Walmart, Brave and Condé Nast build web-services with Hapi and rely on it at scale.
Wiki.js
With Wiki.js you can run a blazing fast Wiki built with performance in mind. Wiki.js is an extensible, free and open source Wiki software written in JavaScript. Wiki.js brings a modern approach to documentation and Wiki writing, it provides a simple to use WYSIWYG editor, a Markdown editor and a visual builder to please all types of workflows. All content moderation is also tracked on a Wiki.js-powered site, which means that you can an revert to a previous state or recover a deleted page at any time and get a broad overview of content evolution. Allowing you to visually compare two versions of the same page to see exactly what changed. Wiki.js runs on virtually any platform and is compatible with either PostgreSQL, MySQL, MariaDB, MS SQL Server or SQLite.
Snowpack
Snowpack enables frontend developers to enjoy a lightning-fast development experience. It's modern build tool that replaces heavier, more complex bundlers like Webpack or Parcel in your development workflow. Snowpack leverages JavaScript's native module system to increase performance and never builds the same file twice. Allowing you to enjoy a near instant hot module reload and refresh no matter how big your project grows. Snowpack supports JSX, TypeScript, React, Preact, CSS Modules and much more, while also provding an extensive plugin catalog with support for almost any technology in the JavaScript eco-system.
Grunt.js
Grunt is an open-source JavaScript task runner, a tool used to automatically perform frequent tasks such as minification, compilation, unit testing, and linting. The Grunt ecosystem contains hundred of plugins that can be used to automate just about anything build related. With Grunt, you use the command-line interface to run custom tasks defined in a your config file to optimize your development workflow.
SvelteKit
SvelteKit is a free and open-source framework used to create SSR, Static and Serverless web applications with Svelte. SvelteKit aims to replace Sapper and in the process unify the eco-system and have a single way to start building apps with Svelte. This will simplify on-boarding, and reduce maintenance and support burden for the core developers. SvelteKit fully embraces the serverless paradigm and has support for all the major serverless providers. Under the hood, SvelteKit uses Snowpack in development and compiles and hot reloads your code near instantly, making it an extremely pleasant developer experience.