Alternatives to WhatRuns
A free browser extension that shows the technologies a website is built with. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
WhatRuns
A free browser extension that shows the technologies a website is built with.
Replacements
Listings that take over the same core job as WhatRuns.
Wappalyzer
Identifies the technologies a website is built with.
Wappalyzer also identifies the technologies behind a website from the browser, but it uses a freemium model and the company monetises technology data.
W3Techs Site Info
A free web lookup that shows the CMS, programming language, web server and host a site uses.
W3Techs Site Info identifies CMS, language, web server and hosting provider, offers Firefox and Chrome extensions plus an API, and its website carries advertising.
Similar software
Related functionality, not a direct replacement.
Chrome DevTools
The web developer tools built into Google Chrome for editing pages, debugging and profiling performance.
Web Developer
Toolbar of web development tools for inspecting and manipulating a page.
Detailed SEO Extension
A free browser extension that shows a page's SEO tags, headings and links in one click.
SEOquake
A free browser extension from Semrush for on-page SEO audits, link checks and page metrics.
