#1
Pixotree - TreeView Control with Search
It might not look the prettiest, but the underlaying control is insanely efficient. Feel free to change the look with css, and with the help of events, have the freedom to built just about anything out of it.
#2
WoOoW Lister (Form Auto Complete - jQuery Plugin)
The Jquery Lister Has Many feature and it is very flexible with you , its built with the more recommended jquery plugin building technique , its well tested and documented , i recommended it for any one need to fask map the database in form input to autocomplete the form actions easly , please see how to customize and config in the next section
#3
CSS3 Multi Level Accordion and Tree Menu
CSS3 Multi-Level Accordion and Tree Menu is a 2 in 1 – Pure CSS3, no javascript, Well styled menu that allows you to easily create multilevel accordion style menus with unlimited levels – The menu comes with 3 sample menus that include 2 stylish accordion menus in ultra modern beautifully styled dark and light versions plus a multi-level tree menu. The menu is well coded and documented with cross browser support including a CSS2 fallback solution for IE8.