webdesignmuseum.org
WebDesignMuseum is a developer resource for coding, documentation, communities, security research, or software tools.
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websitevice.com
Websitevice is a gallery of modern website examples intended as real-world web design inspiration for makers. It organises examples by category, including agency, artist, blog, business, corporate, ecommerce and education sites, with short notes on each example's layout and visual style.
webstudio.is
Webstudio is an open source website builder for creating websites with modern web standards. It exposes all CSS properties and HTML attributes, supports reusable styles without classes, custom breakpoints and scroll-driven animations, and can be self-hosted or published to Webstudio Cloud.
whatpwacando.today
What PWA Can Do Today is a demo site explaining Progressive Web Apps and showcasing live examples of their capabilities. It states that a PWA is a website installable like a native app, able to work offline, send push notifications, and access device hardware such as camera, Bluetooth, and NFC. The site presents over 40 live demos and notes that the app itself is a PWA.
whatunit.com
WhatUnit is a tool that helps users decide which CSS length unit to use. It presents a flowchart that can be panned by clicking and dragging and zoomed with ctrl/cmd plus mouse wheel.
whocanuse.com
WhoCanUse is a tool that illustrates how color contrast affects people with different visual impairments. It grades color combinations against WCAG and shows how various vision conditions and situational events perceive the colors. Percentages for individual impairments are sourced from colour-blindness.com and Vision Australia.
wireflow.co
Wireflow is a free, online and open source tool for creating user flow prototypes without Photoshop skills. It offers 125 ready-made wireframe screen templates, groups and notes, and export to PNG or JPG. The project is MIT licensed and runs in the browser.
wsrv.nl
wsrv.nl is a developer resource for coding, documentation, communities, security research, or software tools.
zeplin.io
Zeplin is a design delivery platform that documents designs, maps user flows and tracks version changes outside design tools. It offers AI Design Review with built-in and custom checks, AI Organize for suggested structure and descriptions, and Connected Components linking designs to Storybook, GitHub and documentation.
accessibilityinsights.io
Accessibility Insights is an open-source set of tools for finding and fixing accessibility issues. Accessibility Insights for Web is a browser extension for Chrome and Microsoft Edge that tests webpages and web applications; Accessibility Insights for Windows is a desktop tool for Windows applications. FastPass is used to find common accessibility issues. The Android tool is no longer available for download.
a11ysupport.io
Accessibility Support is a developer resource for coding, documentation, communities, security research, or software tools.
abc.useallfive.com
Accessible Brand Colors is a developer resource for coding, documentation, communities, security research, or software tools.
httpd.apache.org
The Apache HTTP Server is an open-source web server for modern operating systems. It offers flexible configuration, TLS/SSL and authentication modules, multi-processing modules, HTTP/2, content caching, reverse proxy support and more than 100 modules. It runs on Linux, Windows, macOS and most Unix-like systems. Version 2.4.69 was released 2026-10-01, and version 2.2 is end-of-life.
extension.automa.site
Automa is a developer resource for coding, documentation, communities, security research, or software tools.
beercss.com
Beer CSS is a developer resource for coding, documentation, communities, security research, or software tools.
bloouikit.com
Bloo is an open source low fidelity wireframe kit for quick design and prototyping. Its library contains more than 250 components supporting dark mode and 150 or more ready-to-use mobile screens, and it is free for commercial and personal use under the CC0 license.
html5boilerplate.com
HTML5 Boilerplate is a professional front-end template for building fast, robust and adaptable web apps or sites. It provides a starter index.html with recommended meta tags, a main.css with base styles, helpers, media queries and print styles, and independently maintained server configs for multiple platforms.
avabucks.it
BoxCoding is a developer resource for coding, documentation, communities, security research, or software tools.
caddyserver.com
Caddy is an open source web server written in Go that automatically obtains and renews TLS certificates for sites. It includes a JSON configuration with an on-line config API, a static file server, and an HTTP reverse proxy, and can coordinate certificate management across multiple instances sharing storage.
caniemail.com
Can I Email? provides support tables for HTML and CSS features in email clients. The site lists features and tracks support across clients such as Apple Mail, Gmail, Outlook, Yahoo! Mail and others, and includes a client scoreboard.
caniuse.com
Can I use provides browser support tables for front-end web technologies on desktop and mobile browsers. The site lists features, allows users to vote for or submit missing features, and includes third-party tools for embedding tables and checking CSS features.
websitecarbon.com
Website Carbon Calculator is a free tool from Wholegrain Digital for estimating the carbon emissions attributed to a web page. It states that the average web page produces approximately 0.36 grams CO2 equivalent per pageview.
colorandcontrast.com
Color & Contrast is a developer resource for coding, documentation, communities, security research, or software tools.
colorconverter.dev
Color Converter is a developer resource for coding, documentation, communities, security research, or software tools.