zlacker

>>francz+(OP)
Copyparty is an absolutely incredible tour-de-force and has an absolutely insane feature set.

But if you want something rock solid that probably solves your actual problem, I'd recommend looking at rclone - specifically the 'rclone serve webdav' command.

>>dmd+V2j
Features of copy party I use regularly:

Search to find epubs for my phone

OPDS to downloads things to koreader

Download file as zip to quickly grab an album from my collection to load to a device

Rclone is great but not exactly the same