Kudos to the open-source community!

The PTK would not happen without open source libraries
Wappalyzer Technologies detection
Webextension-polyfill Helped a lot to share code between Chrome and Firefox extensions
Mermaid Great diagram helper
Codemirror Brilliant text editor
Jquery jQuery and jQuery.dataTables
Fomantic UI A community fork of the popular Semantic-UI framework
CryptoES A cryptography algorithms library compatible with ES6 and TypeScript
RetireJS Scan a web app for use of vulnerable JavaScript libraries