The Firefox Universal Uploader(FireUploader), offers the ability to upload or download files to and from most of your favorite sites through one interface. The interface, which opens in a Firefox browser tab, looks much like that of FTP clients with a dual-pane layout. It displays files on your PC on the left, files on the selected website on the right, and status or information in a panel on the bottom.
The extension addresses the limitation of the standard upload mechanism where you can upload only one file at a time.

Main Features:
- Upload files to multiple websites using a single user friendly interface.
- Upload any number of files at a time
- View the file upload progress - Ability to add multiple accounts and upload files to each account independently.
- Many site specific features allows you to edit the properties/meta data of the uploaded files with few clicks.