Software for JavaScript
Webiny
Webiny is a free and open-source static site generator and headless CMS written in JavaScript.
Pug.js
Pug or Pug.js is a free and open-source, high-performance template engine for Node.js. The library is heavily influenced by Haml and share many of the same concepts, while being a JavaScript implementation.
Mandarine.TS
Mandarine.TS is a free and open-source minimalist, decorator-driven, MVC framework for Deno. Mandarine consists of four different core modules, Core, Security, Data & MVC which brings a compact, SOLID oriented solution for complex applications. All Mandarine projects are released under the MIT License and its growth is dependant on the members in the community.
Vest
Vest is a free and open-source validations library for JavaScript applications. The library share many similarities with other testing framework such as Mocha and Jest. It is to write validation testing with Vest as it includes already common declarative patterns. The library can handle validation upon user interaction and user input.
Storybook
Storybook is an open source tool for developing UI components in isolation for React, Vue, Angular, and more. It makes building stunning UIs organized and efficient.
Owncast
With Owncast you can host your own streams. Owncast is a free and open-source, self-hosted live video and web chat server for use with existing popular broadcasting software. Owncast includes a web interface to your video with built-in chat that is available once you start the server. The web interface was specifically built to be editable by anybody comfortable tweaking a web page. Allowing streamers to customize the experience for their audience.
Guess.js
Guess.js is a free and open-source library that provides tools to simplify predictive data-analytics driven approaches to improving user-experiences on the web. The library is written in JavaScript and aims to lower the friction of consuming and applying this thinking to all modern sites and apps, including building libraries & tools for popular workflows.
JerryScript
JerryScript is a lightweight JavaScript engine for resource-constrained devices such as microcontrollers. It can run on devices with less than 64 KB of RAM and less than 200 KB of flash memory.
Chart.js
Chart.js is an easy way to include animated, interactive graphs on your website. Chart.js is a free and open source charting library for JavaScript that is simple, yet flexible. With Chart.js you can mix and match bar and line charts to provide a clear visual distinction between datasets and easily create most common chart types.