Using the Mac's built-in file sharing capabilities, you can open and copy your files with other Macs and Windows PCs on your network. You can also specify individual users you'd like to share files with, and individual folders you'd like to share. You can even restrict those users' access, making it possible for them to only copy files, or providing them with the ability to write new files too. While AirDrop is convenient, file sharing is where the Mac's networking power really shines.