WebDAV - How do I get it?

[COLOR=black][FONT=Times New Roman][FONT=Verdana][SIZE=2]I use FTP server all the time and this is the first time I heard of WebDAV. I would like to know is it possible to get WebDAV for free? If not, what is the reasonable cost to download one. I just downloaded one from BitKinex.[/SIZE][/FONT][/FONT][/COLOR]
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[COLOR=black][FONT=Times New Roman][FONT=Verdana][SIZE=2]Any info is much appreciated.[/SIZE][/FONT][/FONT][/COLOR]