There's a bug for adding FTPS support which has been filled 19 (!) years ago

I believe it could be easily implemented in Firefox. The plain FTP, just as HTTP, does not have encryption, but there's HTTPS alternative for FTP - FTPS, which is a TLS layer on top of FTP. One of the argument against FTP is that it's unsecure. * No functionality to download or upload folders * No functionality to download multiple files at once, only file-by-file * Could not be properly used outside of web browsers * Complex software setup: web server + special third-party file transfer software, which does not conform to any specification * You can navigate through folders, download and upload files and folders with stock Unix and Windows console and graphical software * You can download and upload whole folders * Upload privileges could be given as easy as sharing the link * Easy software setup, lots of mature server and client software for any platform

You can't upload whole folder without complex hacks via HTTP, while FTP allows to do that in one click. Unlike more general and complex protocols like HTTP, FTP does not require for the administrator to setup and configure multiple complex software (web server + application server/interpreter + file sharing software on top of it) to perform one simple thing: file transfer. The main advantage of the protocol is its design for file transfer only. Despite its age, there still aren't really any proper full-featured and well-supported alternatives for FTP, one of the reason is because FTP is universally supported in OS and browsers while other protocols are not, and removing FTP support from Firefox removes 'old and ugly' protocol without introducing any alternative for it, reducing the software functionality for end user. FTP is still widely used, its easy to configure and to use file transfer protocol. Just a random Joe here, but I'd like to vote *against removing FTP support*.

Download fireftp firefox