Parse5HTML parsing/serialization toolset for Node.js. WHATWG HTML Living Standard (aka HTML5)-compliant.
HtmlkitAn Objective-C framework for your everyday HTML needs.
Frisbee🐕 Modern fetch-based alternative to axios/superagent/request. Great for React Native.
ValidatorNu Html Checker – Helps you catch problems in your HTML/CSS/SVG
Node FetchA light-weight module that brings the Fetch API to Node.js
WptTest suites for Web platform specs — including WHATWG, W3C, and others
XhrXMLHttpRequest Standard
whatwg.orgThe WHATWG website and other static resources
relateurlCreate a relative URL with options to minify.
focus-options-polyfillJavaScript polyfill for the WHATWG spec of focusOptions, that enables a set of options to be passed to the focus method
minicrawlerMultiplexing web client supporting HTTP/2 and WHATWG URL compliant parser written in C