Virto Multiple Files Uploader for SharePoint is a Silverlight web part
EditByBSEditor: Virto Multiple Files Uploader is a Silverlight 4 -based web part for easy & simple uploading of multiple files and documents to SharePoint document library.

Virto SharePoint File Uploader allows users to upload multiple files into the document library in a more comfortable way, manage the upload process and view the files they are working with.

Key features:

* Multiple uploading of files into document library with a double click
* Uploading files with drag and drop
* Managing overwriting settings of document library
* Viewing status of files uploading
* Partial uploading if the process in cancelled
* Cross browser(Internet Explorer, Mozilla Firefox, Google Chrome, Opera are supported)
* Windows and Mac are supported
* Custom color themes - Future releases
* Uploading files to different SharePoint objects - Future releases
* Uploading large files - Future releases you can free download Multiple Files Uploader for SharePoint 1.0.0 now.