Let’s Crate launched with one simple aim: to make file sharing ridiculously easy. And they’ve done it. Very, very well. Crate, as it is generally referred to, uses HTML5 drag-and-drop functionality to allow users to upload files in just one step. Without logging in, users can upload files which will stay active for 30 minutes, and logging in allows users to store files for as long as they wish – basically like Dropbox.