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A WebAIM tool for checking foreground and background color contrast in RGB hexadecimal format or with a color picker. It reports a contrast ratio and WCAG AA and AAA pass/fail states for normal text, large text, graphical objects and user interface components. It also functions as a basic API when &api is appended to a permalink.
A guide introducing Web Authentication (WebAuthn), a W3C and FIDO specification that lets servers register and authenticate users using public key cryptography instead of passwords. It explains how credentials work, with a private key stored on the user's device and a public key sent to the server, and covers registering credentials and authenticating with them.
Webchemy is a cross-platform web drawing application designed for sketching. It recreates a selection of features from the Alchemy drawing software, operating as a web-app based on Alchemy accessible across multiple platforms.
WebCode is a site by the Webcode Team that offers code generators for developers and publishes statistics articles on topics such as HTML, CSS, JavaScript, TypeScript, Python and C#. The listings show articles dated 2026, including TypeScript adoption and market share surveys.
WebdevHome helps developers write, search, review, test, or manage code and projects.
WebDNA is a website analysis tool that examines six core modules of a site. It extracts logos, favicons and brand colors, identifies frameworks, analytics and libraries, previews Open Graph data and social connections, analyzes font families, sizes and weights, checks SSL status and header security practices, and gives an overview of page weight and load metrics.
WebFreeHosting.net offers free web hosting with PHP, MySQL, Perl and CGI-BIN support, POP3 email, FTP and a file manager, and states that accounts do not expire. It also lists paid shared hosting plans alongside its free plan.
webkay is a demonstration of the data that a browser knows about a visitor. It states that this data can be accessed by any website without asking for permission. The page presents data points such as location, software, hardware, connection and social media, and notes that most data points are educated guesses and not considered accurate.
WebODM is free and open source drone mapping software that runs on a computer, including offline. It generates georeferenced orthomosaics, point clouds, digital elevation models, textured 3D models and gaussian splats from aerial images, with support for volume and area measurements and NDVI indexes.
WebRTC For The Curious is an open-source book created by WebRTC implementers. It focuses on protocols and APIs rather than specific software, summarizes RFCs and collects undocumented knowledge, and is vendor-agnostic. It is not a tutorial and contains minimal code.
WebscrapeAI is a no-code web data collection tool that automates gathering information from websites without requiring manual scraping or programming skills. It provides customizable, accurate, and fast data collection, with free trial access and paid monthly pricing plans available.
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 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.
A single-page site about mitigating side effects of weight loss, currently covering loose skin, stretch marks and gynecomastia. The author states no credentials and describes the page as covering both scientifically backed and less scientific methods, with sources linked where possible. It notes the issues probably are not completely preventable or reversible.
Weka is open-source machine learning software issued under the GNU General Public License. It runs in Java and is presented as a workbench for data mining, with download, documentation, courses and FAQ resources and datasets available on the project site.
WhatPulse is software that measures computer usage, tracking keystrokes, mouse clicks, application usage, websites, uptime and bandwidth. It is available for Windows, macOS and Linux, and the publisher states it tracks activity but never content. A free plan is offered without a credit card.
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.
WhatsMyDNS is a free online tool for performing DNS lookups against nameservers in many countries. It displays results on a map so users can check DNS propagation for a domain's IP address and DNS record information. The site says it maintains a range of DNS servers for lookups and parses the results for display.
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.
WhichJDK is a site giving independent recommendations on which version of the JDK to use. It notes that OpenJDK is the open source reference implementation of the Java SE specification, while binary distributions are provided by different vendors and differ in licenses, commercial support, supported platforms and update frequency. It recommends Adoptium Eclipse Temurin 25.
Whitespark offers software and services for local SEO. Its tools cover Google Business Profile management, local ranking grids, rank tracking, citation finding and review generation. Services include SEO and citation building for small businesses, agencies and multi-location enterprises.
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.
A lightweight, self-hosted workspace for databases that runs in the browser and is also available as a desktop app or terminal CLI. It offers spreadsheet-style data editing, a visual schema graph and a query scratchpad, with optional AI features through a chosen provider.
Whois is a GitHub repository or organization with source code, releases, documentation, or project resources.
