Just posting this here in case anyone comes across the program and imagines it might solve some problems. I'll save you some time not only does it have little to do with FileZilla, but I tested it both on a new and older archive SharePoint server without success. I don't know if it was a WebDav issue or what, but since DownThemAll went offline, I'm struggling to find a way to intelligently manage SharePoint content.
Status: Portable. Writes to session.dat and an SPFileZilla2013.exe.log file in AppData. It's self-contained, no install. Compatibility key saved to HKU\..\Software\Microsoft\Windows NT
License: Open source, kinda promoting a now-dead company so ... abandoned adware?
Homepage:
https://github.com/suoko/spfilezilla
Download it from here:
https://www.softpedia.com/get/Internet/ ... illa.shtml