Yes OS X has the tftp server built in the current recommended way of starting it is via launchctl as service tftp start is deprecated.
sudo launchctl
load -F /System/Library/LaunchDaemons/tftp.plist
and stop it with
unload /System/Library/LaunchDaemons/tftp.plist
See
http://aplawrence.com/MacOSX/tftp.html for more details
You are right tftpserver was just a nice front end allowing easy start/stop/reconfigure of directories, creation of files etc without using the command line. Can live without it, but just got to love it.
Message was edited by: BigRedFrog