A simple and accessible jquery tree plugin that’s built from nested unordered lists. The plugin supports access via mouse, keyboard, and assistive technologies via ARIA roles and attributes

aciSortable – A jQuery sortable plugin

Sort a list of items (including nested items) in a drag & drop style. Child containers can be created on the fly to allow drag & drop in a tree like structure. Supports drag & drop between sortables. Using callbacks and/or events you can make aciSortable use your own look and feel.

jQuery Slight Submenu

A jQuery plugin for automating nested menu management (expand/collapse) with high configurability and flexibility.

jQuery hierarchy

A jquery plugin which creates HTML form inputs for entering or editing a hierarchical array of settings, for example those used with a JavaScript charting array.