Material Up - Daily updates of new mobile and web apps that use material design principles in production. Has a newsletter and twitter feed associated it with it.
Material UI - UI kit and components for React
Angular Material - UI kit and components for Angular 1
jQuery Material Design Plugins
PreactJS - Lighter weight library that uses React API. Works well as a production build target for React--i.e., develop in React with React dev tools and then have a build task in prod that uses Preact (it's as easy as running a different webpack loader in a prod environment)
Nothing - If data and app state flows up and down component trees without crossing over tree branches "horizontally" much, then you don't really need a special state management library. Introduce a library when events in one part of the page/app start affecting distant parts of the page/app.
Lodash - utility library
Immutable JS - immutable data structures
RxJs - reactive programming library
Ramda - functional programming library
Mocha - test framework for Node.js and browser code
Chai - BDD /TDD style assertion library used with Mocha
Sinon - test mocks, stubs, spies used with Mocha
Jest - React component tester. Shallow renders the component in isolation and allows you to test the render against an earlier canonical snapshot that was taken. Good for UI regression testing.
Supertest - server-side api testing
Webdriver.io - Selenium headless browser and web automation for Node
Fetch API - promise-based native web api for http requests. Polyfill until it has universal browser support.
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent