REST API that detects the full technology stack of any website using Wappalyzer fingerprinting, DNS analysis, TLS inspection, and HTTP header matching.
Cost / License
- Freemium
- Proprietary
Platforms
- Online
BuiltWith is described as 'Discover the technology stack powering websites through a detailed breakdown of frameworks, services, and server information' and is a technology identifier in the development category. There are more than 25 alternatives to BuiltWith for a variety of platforms, including Web-based, SaaS, Google Chrome, Mozilla Firefox and Self-Hosted apps. The best BuiltWith alternative is Wappalyzer, which is free. Other great apps like BuiltWith are WhatRuns, urlscan.io, Blacklight Privacy Inspector and Similar Tech.
REST API that detects the full technology stack of any website using Wappalyzer fingerprinting, DNS analysis, TLS inspection, and HTTP header matching.
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.

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.



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