Open Source Code Javascript

Welcome! This article gives you a list of the best JavaScript open source projects to contribute, find more information about How to do contributions, and learn more about the project’s GitHub and StackOverflow.

There are many open source JavaScript projects available for you to learn. You could always go to GitHub and type the keyword “javascript” in the search bar, but that will only return libraries and frameworks. If you want to contribute to open source JavaScript projects, there are a few things you need to look at before choosing one. You also have to consider how much time you want to spend on the project. I’ll walk you through some of these points so you get the best bang for your buck.


AngularJS is one of the oldest Front-End JavaScript open source frameworks in the industry. Initially developed by Miško Hevery, this widely used framework is among the top 10 starred JavaScript projects on GitHub.

Web applications developed by Angular are cross-platform, in that they are compatible across a wide class of devices, be it Mobiles, Desktops or Tablets. AngularJS is on par with the other frameworks in terms of speedperformance and scalability.

AngularJS advertises to provide huge data requirements and a scalable infrastructure that supports large-scale applications, such as that of Google’s.

Repository link –


Spacetime allows you to manipulate, format, and compare dates and time across the Earth. It supports daylight savings, leap years, and hemisphere. So, you can calculate time even in remote time zones and orient it by quarter, month, week, etc. Check out the full repository here.


React page

ReactJS was invented by Facebook, and it is the clear leader among JavaScript frameworks today, though it was invented well after Angular. React introduces a concept called a virtual DOM, an abstract copy where developers can utilize only the ReactJS features that they want, without having to rewrite the entire project to work within the framework. In addition, the active open source community with the React project has definitely been the workhorse behind the growth. Here are some of React’s key strengths:

  • Reasonable learning curve—React developers can easily create the React components without rewriting the entire code in JavaScript. See the benefits of ReactJS and how it makes it the programming easier on ReactJS’s front page.
  • Highly optimized for performance—React’s virtual DOM implementation and other features boost app rendering performance. See ReactJS’s description of how its performance can be benchmarked and measured in terms of how the app performs.
  • Excellent supporting tools—ReduxThunk, and Reselect are some of the best tools for building well-structured, debuggable code.
  • One way data binding—The model used in Reach flows from owner to child only making it simpler to trace cause and effect in code. Read more about it on ReactJS’s page on data binding.

Who is using ReactJS? Since Facebook invented it, the company itself heavily uses React for its frontpage, and Instagram is said to be completely based on the ReactJS library. You might be surprised to know that other well-known companies like New York TimesNetflix, and Khan Academy also implement ReactJS in their technology stacks.

What may be even more surprising is the availability of jobs for ReactJS developers, as you can see below from research done by Stackoverflow. Hey, you can work on an open source project and get paid to do it. That is pretty cool!


If you are looking to make scroll-driven interactives, Scrollama gives you a simple interface to do just that. Scrollama is a modern JavaScript library for scroll telling that uses IntersectionObserver to handle and detect element positions. Scrollytelling is the art of visual storytelling on the web, which can often prove challenging to implement. But with a tool like Scrollama, you can deliver an impressive project with ease.


This project comprises individual sessions that demonstrate the creation of output with WebGL programming. You are free to use the components of the code for non-commercial usage, but don’t forget to observe the Creative Commons attribution if you copy-paste an entire session. Also, you will have to file an issue for consideration if you want to use it for commercial purposes.


Quokka.js is a prototyping playground for JavaScript and TypeScript that instantly runs your code as you type. The execution results would also appear in your code editor immediately. Developed by the Wallaby.js team, this tool is equipped with powerful live editing features.


npm stands for Node Package Manager, and it does exactly that. It manages your installed Node.js packages and makes it easier to install other packages.

Repository link –


Ember is a JavaScript open source framework which allows developers to create scalable single-page web applications, similar to AngularJS. Ember.js focuses on productivity, easy enhancement and developer-friendliness.

Ember.js is one of the most developer-friendly frameworks out there, taking only minutes for a new developer to build an application. Many popular websites like Netflix use Ember.


Math.js is an extensive math library for JavaScript and Node.js. It has a flexible expression parser and comes with a large set of built-in math functions. It can perform symbolic computation and can also be used as a command line application. What’s more, it’s flexible and can run on any JavaScript Engine.


Prettier is a code formatter for JavaScript. It enforces consistency in style and reprints it with a set of rules, such as a defined maximum word length, and so on. It makes writing code easier without having to worry about the indentation and other rules. is a web diagramming site that provides the source code to be used elsewhere. It uses the mxGraph library as the base. It can be used for almost any kind online drawing applications, and it also lets users save the diagrams to the cloud or to a drive. It supports almost all modern browsers.


Meteor page

MeteorJS is a free and open source isomorphic framework, which means, just like NodeJS, it runs both client and server-side JavaScript. Meteor can be used in conjunction with any other popular front-end framework like Angular, React, Vue, Svelte, etc.

Meteor is used by several corporations such as Qualcomm, Mazda, and Ikea, and many applications like Dispatch and Rocket.Chat. See the case studies on its official website.


With this, we have covered various open-source JavaScript projects on GitHub for beginners as well as intermediate level coders. You can use these ideas for inspiration and refer to them as a guide in implementing your projects!


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