As has been brought to my attention by a kind commenter, FTPCube appears to be yet another alternative for those searching for a multi threaded or multi part FTP client for Linux.
Multi Thread and/or Multi Part FTP client for Linux
Yes, I’m still looking for one. A proper FTP client preferably (in this sense wxdfast doesn’t quite qualify). I’ve been trying to ditch Windows on my downloading machine for ages, and this is basically the last thing that is holding me back from doing so. I’m even considering trying to get the current multi-thread/multi-part FTP…