Sites like codegena.com

Modern CSS Solutions, a site of CSS tutorials, videos and newsletter by Stephanie Eckles on modern CSS techniques

Badgen, a service generating status badges for software projects, such as package versions, ratings and downloads, from URLs

Stylelint, a linter for CSS and related stylesheet syntax, with documentation, changelog, contributing guide and vision pages

freeCodeCamp is a nonprofit programming tutorial publication covering Python, JavaScript, Git, and other developer topics

A community-built open source guide to web accessibility, with tutorials, a self-paced testing workshop, and a team led by Dave Rupert

A JavaScript toolkit, gulp.js, for automating build workflows with composable streaming tasks and plugins, documented through its project website

OpenShot, a free open-source video editing software for Linux, Mac and Windows, with a project homepage and multilingual pages

A free open-source CDN serving popular JavaScript, CSS and font libraries, with an API and library catalogue

A WordPress podcast by Matt Medeiros for digital business owners building online businesses, with episodes on running them

Can I use..., a reference site of browser support tables for web features such as HTML5, CSS3 and JavaScript

A collection of free online tools for text, image and PDF tasks, gathered in one toolbox by 10015 Tools

Selenium, an open-source browser automation tool for web application testing, documented on its official project website

css-doodle is a web component and creative coding tool for making generative CSS art, patterns, icons and backgrounds, with a CLI for rendering artwork

Animista is an online tool for generating and downloading on-demand CSS animations for web elements, such as boxes, buttons and text

Universe Today is an English-language online news blog covering space and astronomy research, with articles by staff writers such as Matthew Williams and Evan Gough

CSS Portal is a website of CSS and HTML generators, tools, quizzes and a blog for web developers

A American political news and analysis publication on Substack, with video, live events and newsletters by Sarah Longwell, Tim Miller and others

A JavaScript UI library site for Preact, a small React-like framework, with its blog, docs and branding pages

A weekly podcast where successful software engineers share their career journeys and lessons learned, by the Software Developers Journey host

Homebrew, a package manager for installing software on macOS, Linux and WSL from the command line

A free open source library of 3D icon renders created in Blender, with a Figma plugin, by designer @realvjy

Ben Frain's blog, books, courses and videos on web development, especially front-end CSS and responsive design

A free online tool that generates customizable SVG background images for websites, with shapes, waves and patterns

The Rust Programming Language project's official site for the Rust systems programming language, with documentation, learning resources and community pages

Symfony, a PHP web framework with documentation, components and tools for building scalable web applications

Blogging Wizard is a blog on building a profitable online business from a blog, by Adam Connell

Floating UI, a JavaScript library and documentation site for positioning tooltips, popovers and dropdowns next to reference elements

Meraki UI, a collection of free Tailwind CSS templates, components and blog layouts for building websites and dashboards

A free template site offering downloadable Google Slides themes and PowerPoint and Canva presentation templates, plus miscellaneous printable extras

Splide, a lightweight accessible JavaScript slider library with documentation, examples and a sponsor-only WebGL transition add-on

Aurelia, a JavaScript web application framework created by Rob Eisenberg, with documentation, learning resources and community contributors

A free Excel tutorial blog and video library by Microsoft MVP Sumit Bansal, with free online tools

PostCSS, a JavaScript tool documentation site for transforming CSS with plugins such as Autoprefixer and its API reference

A stock library of free and paid SVG backgrounds, icons and website graphics by designer Matt, with copy-paste export

A Spanish and Portuguese documentation site for Socket.IO, a library for real-time bidirectional communication between clients and servers

XSGames by Frank Eno, an Italian studio making escape room and puzzle games, plus books

Massachusetts Institute of Technology's official site covering its research, education, campus news and press center

Downloadable vector map library offering over 2,700 printable world, country and regional maps with personal and commercial licensing

OddBird's website covers its open-source CSS tools, such as the Susy grid library, with sponsorship and development news from the studio

NativeScript, an open-source framework for building native iOS and Android apps with TypeScript, plus a showcase of community apps