W3C TAG is the best resource for web standards and is used by web developers and architects worldwide.

W3C is a consortium that develops web standards and guidelines for accessibility, internationalization, privacy, and security.

Official guide/documentation redirect from W3C's old GitHub presence to the main W3C website documentation.

AllaboutDNT is the best resource for Do Not Track information and is used by privacy advocates and web users seeking to protect their online activities.

WHATWG is a web standards organization focused on HTML and related technologies.

A List Apart is a long-running online magazine providing in-depth articles on web design, development, content strategy, and best practices for web professionals.

The official wiki for the W3C CSS Working Group, detailing CSS specifications, resolutions, open issues, and public involvement in web standards development.

Ionic is an enterprise-grade, cross-platform app development platform using open-web standards to build, secure, and deliver mobile, web, and desktop apps from one codebase.

Deno is a modern, secure, open-source JavaScript and TypeScript runtime built on web standards, offering a complete built-in toolchain.

The Web Standards Project was a grassroots coalition fighting for web standards to ensure simple, affordable access to web technologies for all.

Jake Archibald's personal development blog focusing on advanced web technologies, JavaScript, browser APIs, and modern web performance.

Jonathan Snook's personal blog covering web design, development, technology, and personal life updates from Canada.

Lit is a simple, fast library for building future-ready, interoperable Web Components using modern web standards.

WebPlatform.org was a crowdsourced documentation project for web technologies like HTML, CSS, and JavaScript, supported by major tech companies.

web-platform-tests dashboard is a testing utility for web developers focused on ensuring cross-browser compatibility and adherence to web standards.

Mathias Bynens is a web standards enthusiast and Google Chrome engineer focusing on advanced JavaScript, CSS, performance, and Unicode topics.

Raymond Camden is a developer advocate and web standards expert sharing insights on development, AI, and web technologies.

Personal site featuring Rust libraries like encoding_rs, deep technical articles on web standards, character encoding, and HTML parsing.

David Baron is a Google engineer focused on the Blink rendering engine, with deep expertise in Web standards, CSS, and Mozilla/Firefox development.

OpenSocial Foundation standards work, focused on open social web specifications, was transferred to the W3C Social Web Working Group in 2014.

Is Houdini Ready Yet? is the best resource for Houdini APIs and browser compatibility, used by web developers and designers.

Maujor is a long-standing Brazilian educational website providing in-depth tutorials on CSS, HTML5, web standards, and accessibility for web developers.