UltraTree

UltraTree is a fast navigation tree builder based on PHP and MySQL. Features: unlimited depth, though you can set a limit; makes only one SQL query to draw the tree; draws all the ascending branches; you can easily add it to your scripts; UltraTree generates compact HTML; fast - UltraTree generated a tree with 500 categories with a maximum depth of 14 in 0,6 sec on AMD K6-2 300Mhz with 64MB RAM (Zend 4.0.4 w/o the Optimizer).