From F3 Technologies:
With the Ascend Uploader, a user can select one or more files to upload as well as cancel the upload of inidividual files without affecting the entire upload process. Whether you will be uploading small or large files, the Ascend Uploader Component offers a powerful tool to use. Best of all, the component requires very low server memory consumption. Need to create a common look and feel for your application, with Ascend Uploader you can personalize the tool to seemlessly integrate with your website design.