sjFilemanager - open source ajax filemanager based on PHP, but JS part can use different backend. For more details go to http://freaksidea.com/javascript/show-1-sjfilemanager-besplatnyi-ajax-fail-menedzher
PHP web API designed to simplify object handling(loading, saving, querying, displaying, and editing), abstract the data from its display structure, and layout and allow the target data to be delivered to any supported format without special logic.
A platform for web sites and services that require solid support for rich user interfaces in a fail-safe and scalable architecture. It consists of a frontend Javascript framework (also usable stand-alone) and a backendPHP/MySQL environment.