Pretty cool. It does upload the files to S3 though, right?
ShareDrop in theory should be much faster (especially on local network) and more secure, as it sends files directly between devices without any server in the middle.
True. I think the difference would be more obvious with popular files. Say you're at a lecture with 400+ students around you and you want to share some content. Hitting an S3 bucket might make more sense than handling 400+ connections locally.