J Schema
A simple, easy to use data modeling framework for JavaScript
Aja.js
Ajax without XML : Asynchronous JavaScript and JavaScript/JSON(P)
SockJS Client
WebSocket emulation - Javascript client
Request
Simplified HTTP request client.
Chart.js
Simple HTML5 Charts using the <canvas> tag
Bookshelf
A simple Node.js ORM for PostgreSQL, MySQL and SQLite3 built on top of Knex.js
Collections
This package contains JavaScript implementations of common data structures with idiomatic interfaces.
Epoch
A general purpose, real-time visualization library.
Cytoscape.js
A JavaScript graph library for analysis and visualisation (compatible with CommonJS/Node.js, AMD/Require.js, jQuery 1.4+, Bower, npm, and plain JavaScript)
Dn2a Javascript
DN2A JavaScript - Digital Neural Networks Architecture with JavaScript
Immutable Js
Immutable persistent data collections for Javascript which increase efficiency and simplicity.
Keras Js
Run Keras models in the browser, with GPU support using WebGL
JS Xlsx
Javascript XLSX / XLSM / XLSB (Excel 2007+) parser and (one day) writer
Faye
Simple pub/sub messaging for the web
Bluelibs
A collection of open-source software solutions designed for the modern web and enterprise scale.
Reactable
Fast, flexible, and simple data tables in React
Tabletop
Tabletop.js gives spreadsheets legs