ASPPowUpload is an ASP control that enables an ASP application to capture and save files uploaded to the web server by a browser. ASPPowUpload is fully compatible with the standard files upload protocol defined in RFC1867 for the HTML POST Form with the tags.
ASPPowUpload handles and stores the contents of the POST request to a file on the server hard disk rather than loading it into memory. ASPPowUpload provides rich server-side progress indicator that lets users to monitor the progress of their uploads.

File upload component ASPPowUpload features:

Uploads up to 2 GB files without in-memory caching of requests. This feature allows you to upload of large files to a server with the low load of RAM.
Provides rich progress and status information during the upload process.
Supports and includes sample of Flash multiple files upload control called MultiPowUpload 1.7.2
100% Server-side control. Does not require installation on the user computer.
Compatible with any browser and OS on the user side.
Compatible with SSL (HTTPS) and any kind of authentication.
Unicode file names and form values support.
Access non file items of the form in own collection.
Supports multiple files upload from multiple users at the same time.
Includes example of Progress bar without Page postbacks (AJAX technology)