Description: Include pace.js and a CSS theme of your choice, and you get a beautiful progress indicator for your page load and ajax navigation.
No need to hook into any of your code, progress is detected automatically.

Description: A small JavaScript library to create and animate annotations on a web page
Rough Notation uses RoughJS to create a hand-drawn look and feel. Elements can be annotated in a number of different styles. Animation duration and delay can be configured, or just turned off.
Rough Notation is 3.8kb in size when gzipped, and the code is available on GitHub.

Source: https://github.com/rough-stuff/rough-notation

Description: Media player made for movies. Movie focused HTML5 Player.

Source: https://github.com/BMSVieira/moovie.js

Description: Code by Devtools.tech is a platform to create and share interactive code questions. It provides user an easy and seamless way to share knowledge and grow their personal brand

Description: Design Patterns and Refactoring articles and guides. Design Patterns video tutorials for newbies. Simple descriptions and full source code examples in Java, C++, C#, PHP and Delphi.

Description: Here we learn JavaScript, starting from scratch and go on to advanced concepts like OOP.
We concentrate on the language itself here, with the minimum of environment-specific notes.

Description: howler.js makes working with audio in JavaScript easy and reliable across all platforms.

Description: Make a smooth css shadow

Description: Popular Layouts & patterns made with CSS

Description: Hacker UI is a lean and themable library of primitive React components.
It focuses on creating a very thin layer over standard HTML elements to keep the library fast, stable, and easy to use.

Description: Keyboard shortcuts, Markdown, and powerful Draft.js & React customizations

Description: The perfect WYSIWYG editor with the cleanest UI and really easy-to-use features to provide a simple and modern JavaScript rich text editor.

Description: Is my site using HTTP3? Check HTTP3 service on any URL. Test QUIC service, too.

Description: Isolated React component development environment with a living style guide

Description: A super awesome collection of hooks for your React apps.

Description: A simple, scalable, and powerful architecture for building production ready React applications.