Google

The pluggable linting utility for JavaScript and JSX

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).

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

Prettier is an opinionated code formatter.

Full-Time Open-Sourcerer

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

SciPy (pronounced “Sigh Pie”) is a Python-based ecosystem of open-source software for mathematics, science, and engineering.

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

Python's most depended-on HTTP client library

🃏Delightful JavaScript Testing

webpack is THE build solution for modern web applications.

The JavaScript module bundler

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

A functional and reactive JavaScript framework.

Modern native Git hooks made easy 🐶 woof!

A toolkit to automate & enhance your workflow

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

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

Cross-platform lib for process and system monitoring in Python

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

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

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

Simplifies creation of HTML files with Webpack

HTTP mocking and expectations library for Node.js

We are on a mission to simplify unit testing Typescript applications!

improve developer experience and code quality for teams

Build re-usable component libraries in Angular Package Format.

We are on a mission to enable real-time bidirectional communication on every platform.

A mighty, modern CSS linter

Python Task Queue

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

📦🚀 Blazing fast, zero configuration web application bundler

Content as structured data

Next-gen browser and mobile automation test framework for Node.js

Merge designed for Webpack (MIT)

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

We want to support and develop one of the most popular front-end package managers

Set up a modern web app by running one command.

A modular minifier, built on top of the PostCSS ecosystem.

2KB immutable date library alternative to Moment.js with the same modern API

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

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

A lightweight library for converting complex objects to and from simple Python datatypes.

The leading ODM for Node.js and MongoDB

We are on a mission to build reactive libraries for Angular

The positioning engine for all your tooltip and popover needs

A powerful templating engine for node.js and the browser

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 🦁

SymPy is a library for symbolic mathematics, which means performing mathematical calculations exactly.

JavaScript Module Loader

The fast and efficient minifier for modern JavaScript

We are on a mission to help more frontend devs enjoy building apps for the web.

A simpler static site generator.

Better dates & times for Python

Bootstrap v4 components and grid system for Vue.js.

a browser detector

Fast, flexible, and lean implementation of core jQuery designed specifically for the server

Simple commit conventions for internet citizens.

Tool to generate a single bundle of dts

Lint the browser compatibility of your code

An express.js middleware for validator.js.

We are working on creating most used and most useful validation package for Go language.

open source enterprise nodejs framework

Create the next immutable state by mutating the current one

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

Run your tests using Jest & Puppeteer 🎪✨

Next generation web framework for node.js

Create graphs from your CommonJS, AMD or ES6 module dependencies

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

Module for Node.js applications to allow easy as cake email sending

The Intuitive Vue.js Framework

build a great package manager

A micro web server so fast, it'll make you dance! 👯‍♀️

Remove unused CSS

Sorted Containers is an Apache2 licensed sorted collections library, written in pure-Python, and fast as C-extensions.

The Accessible Foundation for React Apps and Design Systems

React Hooks — 👍

The development environment you'll love to use

Advanced geospatial analysis for browsers and Node.js

A Vue UI Library

Develop framework for smart contract testing

Easily create Node apps with Webpack

The web's scaffolding tool for modern webapps