Backgrid
Finally, an easily stylable semantic HTML data grid widget with a Javascript API that doesn't suck.
Backbone Relational
Get and set relations (one-to-one, one-to-many, many-to-one) for Backbone models
Zangodb
MongoDB-like interface for HTML5 IndexedDB
Chartkick
Create beautiful Javascript charts with one line of Ruby
Ydn Db
Javascript database module for Indexeddb, Web SQL and localStorage storage mechanisms supporting version migration, advanced query, SQL and transaction.
Superstruct
A simple and composable way to validate data in Javascript.
Punycode.js
A robust Punycode converter that fully complies to RFC 3492 and RFC 5891, and works on nearly all JavaScript platforms.
Lovefield
Lovefield is a relational database for web apps. Written in JavaScript, works cross-browser. Provides SQL-like APIs that are fast, safe, and easy to use.
G.raphael
gRaphaël’s goal is to help you create stunning charts on your website. It is based on Raphaël graphics library.
Heatmap.js
JavaScript Library for HTML5 canvas based heatmaps
Onionskin
A client- and server-side multi-layer cache manager library
Js Store
JsStore is an IndexedDB Wrapper. It makes IndexedDB super easy with its SQL like apis.
Epoch
A general purpose, real-time visualization library.
Mindb
Database on JavaScript
Flot
Flot is a pure JavaScript plotting library for jQuery, with a focus on simple usage, attractive looks and interactive features.
Vue Trend Chart
Simple trend charts for Vue.js