MC 4.7+ allows VFS scripts in $HOME/.mc/extfs.d without registration.
-rwxr-xr-x 2510 dummy
-rwxr-xr-x 11789 obexftp
-rw-r--r-- 755 obexftp-ANNOUNCE
-rwxr-xr-x 6782 torrent
-rw-r--r-- 487 torrent-ANNOUNCE