D3
A JavaScript visualization library for HTML and SVG.
Stream Saver.js
StreamSaver writes stream to the filesystem directly asynchronous
Stupid Table Plugin
A stupidly small and simple jQuery table sorter plugin
jQuery Gantt
jQuery Gantt Chart
Backgrid
Finally, an easily stylable semantic HTML data grid widget with a Javascript API that doesn't suck.
Kick Js
A WebGL game engine for modern web-browsers.
Officegen
Standalone Office Open XML files (Microsoft Office 2007 and later) generator for Word (docx), PowerPoint (pptx) and Excell (xlsx) in javascript. The output is a stream.
Jtable
A JQuery plugin to create AJAX based CRUD tables.
Tau Charts
D3 based data-focused charting library. Designed with passion. Flexible.
Jit
The JavaScript InfoVis Toolkit provides tools for creating Interactive Data Visualizations for the Web
JSON 3
A modern JSON implementation compatible with nearly all JavaScript platforms.
jQuery treetable
jQuery plugin to show a tree structure in a table
Dgrid
A lightweight, mobile-ready, data-driven, modular grid widget designed for use with the Dojo object store
Plottable
A library of modular chart components, built on D3
Mind
A flexible neural network library
Jumly
Rendering engine for UML diagrams in JavaScript
Zangodb
MongoDB-like interface for HTML5 IndexedDB