It may not work for ginormous files, but I've used a flash swf object to upload ...

		kookster on July 18, 2012 \| parent \| context \| favorite \| on: Common problems with large file uploads It may not work for ginormous files, but I've used a flash swf object to upload to s3, released as part of a Rails gem. The latest version is here: https://github.com/nathancolgate/s3-swf-upload-plugin