SiteFinger is described as 'Quickly find out what software a particular website is using by analyzing server headers, DNS records, and page content and comparing it to our proprietary fingerprint database'. There are more than 10 alternatives to SiteFinger, not only websites but also apps for a variety of platforms, including Google Chrome, SaaS, Firefox and Microsoft Edge. The best alternative is Wappalyzer, which is both free and Open Source. Other great sites and apps similar to SiteFinger are BuiltWith (Freemium), WhatRuns (Free), Shraga (Free) and RivalScan (Freemium).
Wappalyzer is a technographics data provider, uncovering technologies such as content management systems, customer relationship management, ecommerce platforms, advertising networks, marketing tools and analytics.
WhatRuns offers browser extensions that give you information on the technology being used on websites you visit. WhatRuns uses a proprietary recognition algorithm to detect even the latest web technologies and plugins.
A cross platform cross browser multi purpose tool for web developers, designers & webmasters: explore technologies in a website, manipulate web page content, extract data and more, all in a single simple to use bookmarklet based tool.
RivalScan | Competitive Intelligence for Lead Generation. Target your competitor's customers. Find out what websites are built with, Track Technology Trends, Collect Custom Data, Monitor Websites for changes, and much more!.
Find decision makers at every company that uses a specific technology. It is a technographics data provider, uncovering technologies used by companies such as CMSs, CRMs, ecommerce platforms, advertising networks, marketing tools and analytics.