WhatRuns
Discover what runs a website in one click 🖥️ 🔍
WhatRuns launched on August 25, 2017 with 1,045 votes, #2 of 3,214 launches that month and more than 99% of that year's launches. The site was still online in September 2026, 9 years on.
In plain words
WhatRuns is a free browser extension that identifies technologies used on any website with a single click. Designed for developers, designers, and salespeople, it provides instant visibility into website stacks, frameworks, and tools. The extension is available for Chrome and Firefox, enabling users to analyze competitor sites, understand technical implementations, and make informed decisions about technology adoption without leaving their browser.
written from the facts on this page · September 2026
From the sources
https://www.whatruns.com/ is a free technology lookup tool for developers, designers and salespeople to discover the technologies used on any website. Available for free on https://chrome.google.com/webstore/detail/whatruns/cmkdbmfndkfgebldhnkbfhlneefdaaip?hl=en-US and https://addons.mozilla.org/en-US/firefox/addon/whatruns/.
A free browser extension that helps you identify technologies used on any website at the click of a button. WhatRuns shows you pretty much everything that powers a website. Web apps they pay for, CDN they’re hosted on, how they track their visitors, Wordpress plugins, fonts – you name it! Keep up with the pace by knowing when a website starts or stop using a technology. Follow websites, and we'll notify you when that happens. Our in-house magicians add anywhere between 50-100 new web apps every day. Don't miss out on what'sfrom whatruns.com
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