Drag & Drop File Uploader is a plugin by Hedge using the new HTML5 Filereader-API. It adds a box below the post-editor on which you can drag and drop files directly from your filemanager. Images are added directly to the current post. You can even drop multiple files on it at the same time.
Plugin based on Sebastian Tschan’s excellent jQuery File Uploader
Browser Support
The plugin has been successfully tested with the following browser versions:
Google Chrome – 7.0, 8.0, 9.0
Apple Safari – 5.0 ¹
Mozilla Firefox – 3.6
¹ Drag & Drop is not supported on the Windows version of Safari.
Download and info: http://wordpress.org/extend/plugins/drag-drop-file-uploader/