List of free HTML stuff for developerππ½
If you're looking for all programming tools around HTML (not just free). Check this page List of HTML Programming Tools

Stisla
Stisla is a free Bootstrap admin template. Stisla will help you to speed up your project, design your own dashboard UI and the users will love it.
Tag: bootstrap, html, css, template
Stisla is no longer a simple version and a pro version. Now, everything is the same. The many components and full features, speed up your project.

100Devs - leonnoel.com
Train people underrepresented in tech for high growth careers as software engineers.
Tag: HTML, CSS, JavaScript, learning-resource
Free course to learn (or refresh your knowledge of) full-stack development.

Web Code Tools
The ultimate web code generators. Generate HTML, CSS, JSON-LD, Twitter Cards, Open Graph and more! No coding skills required.
Tag: html, css, JSON, meta
HTML Generators/HTML Editor
This page contains links to the HTML generators on this website. These online code generators let you easily create your HTML elements without needing to use any HTML code.
Tag: html
HTML Generator HTML Editor HTML Template

HTML Cleaner
Get rid of your dirty markup with the free online HTML Cleaner. Easy to compose, edit, format and minify the web code with this online tool. Convert Word docs to tidy HTML
Tag: html