Wappalyzer is described as 'A technographics data provider, uncovering technologies such as content management systems, customer relationship management, ecommerce platforms, advertising networks, marketing tools and analytics' and is a popular technology identifier in the web browsers category. There are more than 25 alternatives to Wappalyzer for a variety of platforms, including Web-based, SaaS, Google Chrome, Mozilla Firefox and Chrome OS apps. The best Wappalyzer alternative is BuiltWith, which is free. Other great apps like Wappalyzer are WhatRuns, urlscan.io, SiteRecipe and Similar Tech.
Web Metadata & Contact Extractor is a REST API that takes any URL and returns SEO/OpenGraph metadata, contact info (emails + social links), detected tech stack, security headers, Schema.org JSON-LD, and a clean Markdown version of the page content -- all in a single call.
Turn raw tech stack data into a fully automated prospecting pipeline. Identify and target companies based on the specific technologies they use — from CRMs and analytics tools to infrastructure and dev frameworks — so you can reach the right buyers at exactly the right moment.
Siggle is a real-time sales signal engine for eCommerce agencies. Find B2B leads the moment they drop an agency, switch tech stacks, or hire.
Denmark
EU
StackScope tracks the technology behind newly launched products. It continuously ingests launches from Product Hunt, Hacker News, PeerPush, and the wider web then fingerprints each site's frameworks, hosting, CDN, DNS, analytics, security headers and AI-builder signals.
A web technology identification service built on a high performance WASM module to provide faster and broader detection capabilities.
United States
W3Techs measures and provides statistics on the usage of technologies on websites. Technologies include content management systems, programming languages, JavaScript libraries, CSS frameworks, web server, web panels, operating systems, web hosting providers, data center...
AustriaEU
SearchWebCode is a search engine for website source code. It indexes the HTML, JavaScript, and CSS of 127 million website homepages and lets you query that corpus with exact strings or full regular expressions.
Prafero is an all-in-one website intelligence platform for auditing any site in one place. It analyzes SEO, performance, security, DNS, and tech stack signals, then turns them into clear insights so founders, marketers, developers, and agencies can make faster website decisions.
BeaverCheck is a free website audit tool that runs 100+ checks across performance, SEO, security, accessibility, and compliance on any URL.
TheirStack is the largest job posting and technographics database, empowering sales teams to uncover opportunities through real-time technographic and hiring signals. We process over 235k jobs per day from 104k sources and track 32k technologies across 9.9M companies.
United States
Free website security scanner that checks HTTP headers, TLS/SSL, DNS security, CSP violations reporting and web server hardening with actionable fix guidance.
Spain
United Kingdom
