FTP and SCP are the only ones I know about since I use them and they do all I want.
However, a quick search also suggests that there is a SAMBA server available on the Omega. Doing opkg list samba* shows:
samba36-client - 3.6.25-5 - Samba 3.6 SMB/CIFS client
samba36-server - 3.6.25-5 - The Samba software suite is a collection of programs that implements the
SMB protocol for UNIX systems, allowing you to serve files and printers to
Windows, NT, OS/2 and DOS clients. This protocol is sometimes also referred
to as the LanManager or Netbios protocol.
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