Aja.js
Ajax without XML : Asynchronous JavaScript and JavaScript/JSON(P)
SockJS Client
WebSocket emulation - Javascript client
Request
Simplified HTTP request client.
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)
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.
List
Do you want a 3 KB (gzipped&minified) cross-browser native JavaScript that makes your plain HTML lists and tables super flexible, searchable, sortable and filterable? Yeah! Do you also want the possibility to add, edit and remove items by dead simple templating? Hell yeah!
Immutable Js
Immutable persistent data collections for Javascript which increase efficiency and simplicity.
Recline
A simple but powerful library for building data applications in pure Javascript and HTML.
JS Xlsx
Javascript XLSX / XLSM / XLSB (Excel 2007+) parser and (one day) writer
Dn2a Javascript
DN2A JavaScript - Digital Neural Networks Architecture with JavaScript
Faye
Simple pub/sub messaging for the web
Arbor
A graph visualization library using web workers and jQuery
Keras Js
Run Keras models in the browser, with GPU support using WebGL
Bluelibs
A collection of open-source software solutions designed for the modern web and enterprise scale.