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A blog covering the AI movement and offering practical advice for builders. Posts include topics such as QA stacks for enterprise engineering teams, free tools for generating API test data, continuous security scanning, browser extensions for QA engineers, and quality assurance versus testing.
Online code playground for testing HTML, CSS, and JavaScript snippets in the browser.
ContextQA is an AI test automation platform for enterprise applications and AI agents. It generates test cases, repairs broken selectors automatically, and supports web, API, cross-browser, and cross-device testing. It also offers MCP integration with Cursor and Claude Code.
CRX Downloader is a Chrome extension downloader that downloads Chrome extensions as zip or crx files. The site says these files can be used with testing tools like selenium or to view the extensions' content.
DriftGuard is a browser-based dashboard for testing and tuning gamepads. It offers drift checks, stick visualization and calibration tools, along with stick, trigger and range calibration, live input display, rumble settings and audio tests. Supported options include selecting target sticks or triggers and saving or restoring calibration.
A browser-based tool that generates South African ID numbers, labeled as fake on the page. A form is submitted to obtain a generated number, and the page links to Wikipedia, an article and the source code for further information.
Instagram Download Button is a JavaScript userscript for Greasemonkey/Tampermonkey that adds a download button and an open button to Instagram. It allows downloading or opening profile pictures and media in posts, stories and highlights with one click. The author notes testing only on Chrome, Edge and Firefox with Tampermonkey on Windows, and that it does not support the reels page.
A book titled JavaScript for Data Science by Maya Gans, Toby Hodges, and Greg Wilson, version 4.0, dated January 2020. It covers topics such as callbacks, promises, objects, classes, HTML, CSS, React, data services, testing, data visualization, and a three-tier web application, with an even mix of browser and server programming. It is intended for scientists and engineers.
The KNMI Climate Explorer is a web-based scientific analysis tool from the Royal Netherlands Meteorological Institute. It offers access to over 10 TB of climate data and dozens of analysis tools for exploring and visualizing climate data in the browser, including time series, anomaly calculations, event comparisons, and trend analysis with significance testing. Results can be visualized and downloaded.
ModelViewer is a web component for displaying interactive 3D models on the web and in AR. It offers documentation, examples, API reference and addons, plus an editor for testing models and downloading a starter website. It supports the last two major versions of evergreen desktop and mobile browsers and the last two versions of Safari.
Modern CSS Solutions is a series by frontend developer Stephanie Eckles examining modern CSS approaches to common frontend problems. Articles cover topics such as custom properties, container query units, CSS math functions, selectors, accessibility upgrades, and testing browser feature support with fallbacks and build tools. A companion site, SmolCSS, offers minimal snippets for modern layouts and components.
Browser playground for testing Microsoft's Monaco code editor and editor features.
NoteBin is a pastebin-style website: a note is accessed through a link, and giving the URL to anyone allows them to access the note as well. The site states it requires a modern browser and that it is using an insecure connection, which the site says should only be used for testing.
An online tool that parses the HTML of a web page and extracts its internal and external links, displaying them in plain text. After a page address is submitted, the system downloads the page and lists the resulting URLs. It is built with the Lynx command-line browser and described for research, development, security assessments and web page testing.
Pinging.net is a web tool for testing and monitoring an internet connection. It reports status for HTTP, DNS, WebRTC and the browser, and shows web ping statistics including last, minimum, maximum and average values and packet loss, with updates every 30 seconds.
A web automation and testing framework for apps, scripts, and AI agents. It offers a test runner with auto-waiting and assertions, browser automation across Chromium, Firefox, and WebKit, and a Model Context Protocol server for AI agents.
Replay QA is an autonomous testing harness for web applications. Agents explore an app, write and run tests in a Chromium browser, and record deterministic runtime sessions. It reports bugs such as runtime bugs, UI glitches, accessibility issues, performance problems and security vulnerabilities, with a root cause and suggested fix. Reports go to GitHub, Linear, Jira or other HTTP endpoints.
A simple web page for testing APIs. Users specify an HTTP method, URL and parameters and click to send an Ajax request. The page requires a browser with HTML5 support.
Test IPv6 tests a browser and connection for IPv6 readiness and shows the current IPv4 and IPv6 address. The site requires JavaScript and the ability to pull in cross-site scripts to perform the testing. A simple test offers a quick pass/fail for IPv4, IPv4+IPv6, and IPv6, but provides little diagnostic information.
Untap.in is a free, browser-based table for play-testing trading card game decks. Users can build decks from card databases, import decklists, play live against opponents, goldfish solo, run drafts, and spectate matches. It runs on desktop, tablet, and phone without downloads and does not enforce game rules.
V-Fonts is a web resource for finding and testing variable fonts. It hosts 377 variable font entries including examples such as Roboto Flex and Helvetica Now Variable, and offers filtering options for decorative, body text, serif, sans-serif, script, designer, character set, and license type. The site requires a browser that supports OpenType font variation technology to display variable font samples correctly, otherwise samples appear as static fonts. It is currently at version 0.2.
WAVE is a suite of evaluation tools that helps authors make web content more accessible. It can identify many accessibility and WCAG errors while facilitating human evaluation. WAVE is available as an online tool and as Chrome, Firefox, and Edge browser extensions for checking password-protected, locally stored, or highly dynamic pages. A subscription API and testing engine are also offered.
