On Windows I love the lightweight and open source TFTPD32, but there may come a time when you find youself needing to transfer some files and all you have is your trusty mac.
Luckily there’s a built in tftp daemon that you can use in a pinch.
By default tftpd uses the following folder:
/private/tftpboot
which is hidden in finder, but can be accessed by using “go to folder” or hitting Command+Shift+G and entering /private/tftpboot