ethereum

The pluggable linting utility for JavaScript and JSX

Prettier is an opinionated code formatter.

Full-Time Open-Sourcerer

simple, flexible, fun javascript test framework for node.js & the browser.

Chai is a BDD / TDD assertion library for node and the browser that can be delightfully paired with any javascript testing framework.

Content as structured data

Babel is the community maintained compiler for evolving the future of JavaScript

A toolkit to automate & enhance your workflow

Modern native Git hooks made easy 🐶 woof!

⚡️Simple, Modular & Accessible UI Components for your React Applications

Emotion is a css-in-js library focused on performance and developer experience.

improve developer experience and code quality for teams

Build cross platform desktop apps with JavaScript, HTML, and CSS

🃏Delightful JavaScript Testing

webpack is THE build solution for modern web applications.

I am a git library implemented in JavaScript, so you can use me everywhere! https://t.co/chpt1LoiYn

The pytest framework makes it easy to write small tests, yet scales to support complex functional testing

Visual primitives for the component age. Use the best bits of ES6 and CSS to style your apps without stress 💅

Transform SVGs into React components 🦁

Sleek, intuitive, and powerful front-end framework for faster and easier web development.

Set up a modern web app by running one command.

IPython is an enhanced interactive Python environment aimed at maximizing productivity in workflows that combine data, computation and exploratory programming.

React components for faster and easier web development. Build your own design system, or start with Material Design.

HTTP mocking and expectations library for Node.js

Nodemon is a utility that will monitor for any changes in your source and automatically restart your server. Perfect for rapid development.

The fundamental package for scientific computing with Python. IMPORTANT: we are still setting up this collective, and cannot accept donations yet (as of 30 April 2021).

We're on our mission to simplify drag'n'drop for files in React applications.

📋 React hooks for form validation without the hassle

Fast and concurrent JavaScript test runner with simple test syntax and Babel built-in.

An open-source Python package that assists in the processes of designing, testing and validating complex systems through simulation.

A functional and reactive JavaScript framework.

The web has evolved. Finally, testing has too.

Modern JavaScript date utility library

We are on a mission to maintain the `visionmedia/debug` JavaScript debugging module

On a mission to move the Web forward keeping an eye to older devices.

Easy to Maintain Open Source Documentation Websites

Continue to make faker.js the best open-source fake data solution available.

Fast pure JS implementation of XML parser

An HTML5 saveAs() FileSaver implementation

Build forms in React, without the tears 😭

HTML to React parser.

Inferno is a high-performance javascript library for building user interfaces.

end-to-end testing, straightforward and effortless

pandas is a data wrangling platform for Python that provides easy-to-use data ingestion, transformation, and export functions.

Want to write styles in JavaScript, but also want Sass-style helper functions and mixins? Need a con

Help us on our mission to deliver the best day picker package for react!

Making the web a better place

Display PDFs in your React app as easily as if they were images.

React notification made easy 🚀 !

We are on a mission to Make React applications more efficient on web and mobile by not rendering unnecessary data.

Redefined chart library built with React and D3

We are on a mission to bring ease for side effects management in Redux applications.

We provide the most widely used stubbing library for JavaScript with ~3M weekly downloads

The development environment you'll love to use

A mighty, modern CSS linter

Python's most depended-on HTTP client library

Yarn is the community maintained package manager for JavaScript; we aim to make software development predictable and stable 📦