Chart.js
Simple HTML5 Charts using the <canvas> tag
J Schema
A simple, easy to use data modeling framework for JavaScript
jQuery File Upload
File Upload widget with multiple file selection, drag&drop support, progress bars and preview images for jQuery. Supports cross-domain, chunked and resumable file uploads and client-side image resizing. Works with any server-side platform (PHP, Python, Ruby on Rails, Java, Node.js, Go etc.) that supports standard HTML form file uploads.
Flotr2
Graphs and Charts for Canvas in JavaScript.
Dygraphs
Interactive visualizations of time series using JavaScript and the HTML canvas tag. The dygraphs JavaScript library produces interactive, zoomable charts of time series.
Request
Simplified HTTP request client.
Dn2a Javascript
DN2A JavaScript - Digital Neural Networks Architecture with JavaScript
Oboe.js
A fresh approach to AJAX that speeds up web applications. Progressive JSON parser with an easy interface so you can use the objects before the http response completes.
Immutable Js
Immutable persistent data collections for Javascript which increase efficiency and simplicity.
Lowdb
An extendable JSON database for Node and the browser powered by lodash
Reactable
Fast, flexible, and simple data tables in React
Tabletop
Tabletop.js gives spreadsheets legs
Keras Js
Run Keras models in the browser, with GPU support using WebGL
Bookshelf
A simple Node.js ORM for PostgreSQL, MySQL and SQLite3 built on top of Knex.js
JS Xlsx
Javascript XLSX / XLSM / XLSB (Excel 2007+) parser and (one day) writer
Smoothie
Smoothie Charts: smooooooth JavaScript charts for realtime streaming data
Dimple
An object-oriented API for business analytics