Grafico: Javascript charting library • Design • Kilian Valkhof

Chart.js seems to be a good alternative to Google's Chart API and other commercial chart drawing libraries.

• good looking charts
• canvas based (means less memory consumptive, but no interactivity out of the box)
• hig...

Comprehensive, yet simple, stealthy and fast. Datejs has passed all trials and is ready to strike. Datejs doesn’t just parse strings, it slices them cleanly in two.

sing Google’s JavaScript Library CDN comes with a 1/3 of a second tax on missing. (Note that a tax like this applies to opening connections to a any new host: JavaScript Library CDNs, advertisers, analytics and visitor tracking, etc. This is why y...

Flotr is a javascript plotting library based on the Prototype Javascript Framework (version 1.6.0.2 at the moment) and inspired by Flot (written by Ole Laursen).

A pure-JavaScript CSS selector engine

Raphaël is a small JavaScript library that should simplify your work with vector graphics on the web. If you want to create your own specific chart or image crop and rotate widget, for example, you can achieve it simply and easily with this libr...

A lightweight javascript date library for parsing, manipulating, and formatting dates.

BubbleTree is a library for interactive visualization of hierarchical data. Originally developed mainly for spending data, the library is now completely independent from the OpenSpending platform. BubbleTree is built on top of jQuery and Raphael...

When your JavaScript bundle is so massive that you cannot load it all up front, I would recommend to load large libraries from the compilers that need it.

Compilers are also a good place to track whether the library has been loaded before. Note t...

Inspired by a snippet of code in Oliver Steele’s legendary Functional library, here’s a lightweight tool to help keep track of JavaScript invocations. It works in Chrome, Safari, Firebug and IE8.