BuiltWith - Find out the technology behind websites
genei.io - AI-generated summaries for any article or research paper.
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
RadaeePDF - RadaeePDF is a library for developers who want to render, manipulate, annotate PDF files on Android, iOS and Windows.
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.
Anvil PDF Filling API - The easiest way to programmatically populate any PDF