freeCodeCamp.org's open-source codebase and curriculum. Learn to code for free.

Material UI: Comprehensive React component library that implements Google's Material Design. Free forever.

Open-Source Notification Platform. Embeddable Notification Center, E-mail, Push and Slack Integrations.

Build Better Websites. Create modern, resilient user experiences with web fundamentals.

Seamless REST/GraphQL API mocking library for browser and Node.js.

Create React App Configuration Override, an easy and comprehensible configuration layer for Create React App.

Host single page apps with GitHub Pages

Slack Developer Kit for Node.js

Deduplication tool for yarn.lock files

React Component Library for OpenLayers

Generate typescript types from DHIS2 open-api

Tools to help working with dates, times and periods in non-Gregorian calendars