Alternatives to WhatCMS
A web tool that detects which CMS and other technologies power a given website. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
WhatCMS
A web tool that detects which CMS and other technologies power a given website.
Replacements
Listings that take over the same core job as WhatCMS.
BuiltWith
A web tool that detects the technologies a website is built with.
BuiltWith identifies CMS, analytics, CDN and hosting with free single lookups and trend data, while detailed reports and bulk data are paid.
W3Techs Site Info
A free web lookup that shows the CMS, programming language, web server and host a site uses.
W3Techs Site Info shows CMS, language, server and host for free, with browser extensions and a bookmarklet for the current page.
Netcraft Site Report
A free web lookup that shows the hosting, server software and technologies behind any website.
Netcraft Site Report adds hosting history, certificate details and a risk rating to its technology lookup, under a fair use policy.
HackerTarget WhatWeb Scan
An online scan that runs WhatWeb and Wappalyzer to fingerprint the technologies behind a website.
HackerTarget WhatWeb Scan runs WhatWeb and Wappalyzer online, with heavier use on paid plans and use limited to sites you may assess.
Cloudflare Radar URL Scanner
Free Cloudflare web tool that scans a URL and reports its technologies, security and performance details.
Cloudflare Radar URL Scanner reports technologies alongside security and performance details for one public URL at a time, without batch detection or an API mentioned.
Also worth comparing
These listings name WhatCMS as their own alternative, so the relationship runs both ways.
WordPress Theme Detector
A free online tool that identifies the WordPress theme and plugins a website is using.
WhatCMS detects about 1,540 technologies on any platform, not only WordPress, but does not list the specific theme and plugins.
Similar software
Related functionality, not a direct replacement.
ViewDNS.info
A web collection of more than 20 DNS, IP and domain lookup tools, with a paid API.
Web Check
Open-source, self-hostable tool that analyses a website's DNS, security, headers and other public details.
urlscan.io
Sandbox for the web that loads a URL and records screenshots, requests and indicators.
