whatsapp-web.js is a WhatsApp client library for NodeJS that connects through the WhatsApp Web browser app. It uses Puppeteer to run a real instance of Whatsapp Web to avoid getting blocked.
Faker.js is a project to generate massive amounts of realistic fake data in Node.js and the browser.
PDFKit is a PDF generation library for Node and the browser that makes creating complex, multi-page, printable documents easy.
The API embraces chainability, and includes both low level functions as well as abstractions for higher level functionality.
FlexSearch.js is a fastest and most memory-flexible full-text search library with zero dependencies. It also provides flexible search capabilities like multi-word matching, phonetic transformations or partial matching.
With Bowser you can get browser information, device information (mobile/tablet), OS information (MAC, Windows, linux, iOS, Android, WindowsPhone etc.)
Store.js is a localStorage wrapper for all browsers without using cookies or flash. Uses localStorage, globalStorage, and userData behavior under the hood.
It has a plugin-based architecture, first-class support for resumable uploads according to the open standard: tus, and custom encoding backends, making it extensible and robust.