Wappalyzer is a technology profiling tool available as a browser extension and web service that identifies the technology stack used by any website, including frameworks, CMS platforms, analytics tools, hosting providers, and JavaScript libraries. It solves the common need of understanding what technologies power a given website by analyzing HTTP headers, HTML source, JavaScript variables, cookies, and other signals to detect hundreds of different technologies. Wappalyzer is used by developers, marketers, and sales professionals to gain insight into the technical choices made by any website.
Wappalyzer detects over 1,700 technologies across categories including web frameworks, JavaScript libraries, CMS platforms, ecommerce systems, analytics and tracking tools, CDN providers, web servers, programming languages, and security solutions. It provides instant technology detection as you browse, detailed category breakdowns, version detection where available, and confidence scores for each identification. The Wappalyzer API and lookup service enable bulk technology profiling for lead generation, competitive analysis, and market research, offering data on millions of websites indexed across the internet.
Wappalyzer is valuable for frontend developers researching competitor implementations, sales teams prospecting based on technology usage, digital marketers analyzing competitor stacks, and security researchers identifying potentially vulnerable technology versions. It is available as a browser extension for Chrome, Firefox, and Edge, as an API for programmatic access, and as a web-based lookup tool. Wappalyzer is particularly useful for technology consultants evaluating potential client stacks, developers exploring how popular sites are built, and business development teams targeting companies using specific technologies.
