PHP File Manager | CloudOsys - Version 2.9b8 CloudOsys is a PHP file manager, a tool that allows your visitors upload files such as media content directly to your website. Your visitors will upload files directly to your website, where they can share and comment on them. Through cloud computing technology using the browser, the script simulates a virtual desktop where users interact with files by drag and drop. This script is for you to provide your own online file sharing application.