hoverIntent jQuery Plug-in : hoverIntent is a plug-in that attempts to determine the user's intent... like a crystal ball, only with mouse movement! It is similar to jQuery's hove...
Frappe Charts : GitHub-inspired simple and modern charts for the web with zero dependencies.
Protovis : Protovis composes custom views of data with simple marks such as bars and dots. Unlike low-level graphics libraries that quickly become tedious for vi...
Handsontable : Handsontable is a minimalistic approach to Excel-like table editor in HTML & jQuery. Now with column and row headers!
jquip : Smaller, Lighter, Faster, more modular jQuery - include only the parts you want! Don't use it, Don't include it.
Morris.js is a lightweight library that uses jQuery and Raphaël to make drawing time-series graphs easy.