Question: How can I find out what frameworks, libraries, and server software are used by a specific website?

If you want to find out what frameworks, libraries and server software a particular website uses, Wappalyzer is a good option. It can identify and track more than 5,126 web technologies in 103 categories, making it a good tool for sales and marketing teams. Wappalyzer offers website profiling, competitor analysis, custom reports and an API for integration. It also integrates with Salesforce, HubSpot and Semrush so you don't have to do as much legwork.

Another option is TechPeeker, which offers immediate detection and detailed reports on a website's technology stack. It's geared for developers, digital marketers and technology strategists who can use it to get competitive intelligence and optimize their own technology. TechPeeker has an easy-to-use interface and customizable data options, so it's useful for people with varying levels of technical expertise.

If you want to target outreach and optimize a campaign, Simulai offers a more powerful platform to search for and contact websites by specific technology. With a database of 35 million websites and more than 3,000 technologies, Simulai lets businesses and marketing professionals build targeted email campaigns and promote products to the right audience.