playable
Video player based on HTML5Video
Video player based on HTML5Video
A full-featured user interface for managing tags with Bulma supporting autocomplete.
Fully featured ECS game engine written in JavaScript

Site Engine is the world's first all-in-one engine to build a modern web site, game, or blog. No HTML or CSS knowledge required.
This is a plugin for markdown-it which adds support for embedding audio/video in the HTML5 way, by using <video>/<audio> tags.
A simple HTML5 Gamepad handler that provides keyboard-like events for Gamepad axes and button
Buzz, a Javascript HTML5 Audio library
Automatically adds datepickers to input[type=date] on IE, Firefox, and macOS Safari.
Adds missing window.history events onpushstate, onreplacestate and onchangestate.
Tidy bad HTML markup
PlayCanvas WebGL game engine
react renderer for html5 canvas
Change your ng-attributes to data-ng-attributes for html5 validation
Change your ng-attributes to data-ng-attributes for HTML5 validation
Library of reusable helper functions for testing HTML5 applications with Protractor
Gulp plugin to validate HTML using the W3C Markup Validation Service
html5 video component for react.js app
A cross platform HTML5 QR Code & bar code scanner
Convert SRT format subtitle to WebVTT on the fly over HTML5 environment