Another article which mention both FTP and Dropbox. The infamous top comment on the Dropbox HN launch back is what led me down the rabbit hole of building a Dropbox like UI for FTP: https://github.com/mickael-kerjean/filestash

FTP is amazing on so many perspective. About a month ago, I crawled the entire IPv4 range looking for anonymous FTP and found about 200k of them. As I wanted to publish the results and provide a way to get through those servers, I ended up building crawlers but quickly stopped as the sheer amount of movies, series, music I found would have been more problems than it's worth.