Netatalk is a freely-available Open Source AFP fileserver. It also
provides a kernel level implementation of the AppleTalk Protocol
Suite. A *NIX/*BSD system running Netatalk is capable of serving many
Macintosh clients simultaneously as an AppleShare file server (AFP),
AppleTalk router, *NIX/*BSD print server, and for accessing AppleTalk
printers via Printer Access Protocol (PAP). Included are a number of
minor printing and debugging utilities.