Did you ever need a quick way to share files from a directory on your computer? Or perhaps transfer a large file to another person? With nodejs and express, you can easily set up a temporary web server that allows users to browse and access a list of files in a directory. For convenience, I created a simple github project that can be cloned into any directory, and then a server started in a matter of seconds. Yes, you could upload files to a server, or share them with a file sharing service, but if you can expose a random port on your computer to the person who needs the files, then this is faster, and does not require any intermediate steps. Check out https://github.com/cbrake/http-file-server for more information.