Sites like embedresponsively.com

ShareTXT is a web tool for instantly syncing typed text between devices, plus a collection of free open-source productivity apps

A free online tool that converts text between upper case and lower case, with no need to retype

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

Simon Collison's personal website, a blog and journal by a designer, writer, artist and musician named Colly

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

Roots, an open source org building WordPress development tools such as Bedrock, Sage, Acorn and Trellis, with a blog and docs

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

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

Synfig Studio is free, open-source 2D animation software for Windows, Linux and macOS, using vector and bitmap artwork

A free online toolset for creating and editing animated GIFs, with conversions for WebP, APNG and AVIF formats

Framework7, a free open source framework for building mobile, desktop and web apps with native look and feel

A web-based motion graphics editor for creating animated videos in the browser, named Motionity, available on desktop computers only

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

Hexo, a fast Node.js static blog framework with Markdown support, one-command deployment, plugins and themes

Documentation and project site for Passport.js, an authentication middleware library for Node.js applications

Blog by web standards leader Lea Verou on CSS, web design, icons and open source developer tools

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

Qiita, a Japanese knowledge-sharing platform where engineers publish technical articles and tutorials on programming and software development

Personal site of software engineer Mario Ranftl with notes on software engineering, system design, and web development

Jonathan Snook's personal site, a blog, journal and web design and code playground at Snook.ca

Michael Scharnagl's personal blog of front-end development notes on HTML, accessibility, web performance and Eleventy, in English

The HTTP Archive is a public dataset and reports project that crawls top websites to track how the web is built

A collection of free technical SEO tools and articles, including robots.txt, hreflang, AMP and .htaccess testers, on TechnicalSEO.com

Free open source software for video recording and live streaming, the OBS Studio download and project site

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

Alin Lupascu's personal site presenting his open-source macOS utility apps and developer background, built with Swift and SwiftUI

Retro Dodo, an independent online magazine on retro gaming news, reviews and collecting, founded by Brandon Saltalamacchia in 2019

Darling, an open-source translation layer for running macOS software on Linux without a hardware emulator

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

Emmet, a plugin toolkit for writing HTML and CSS faster in text editors, by developer Sergey Chikuyonok

HoHli Projects is a personal portfolio of web services, open-source libraries, blogs, a photo blog and an AI novel by a developer

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

Andy Clarke's web design studio and blog in North Wales, with books, templates and t-shirts on web design

CSS Tip, a daily CSS tricks blog and tool collection by Temani Afif, with generators for borders, corners and loaders

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

Open WebUI, a self-hosted software platform for running and connecting AI models, with a user community and documentation

A design and development agency that builds web and mobile products, with case studies and services from thoughtbot

SmoothCSV is a CSV file editor for macOS, Windows and Linux, a desktop tool by developer kohii