What compression format uses .xz extension?

[kilowattradio]

I'm downloading the FreeBSD 8.2 DVD and it has an extension of xz at the end of the file name. What compression format is being used with FreeBSD when a file has that extension?

 

[gordon@]

LZMA. You can download an implementation for windows with 7-zip. http://www.7-zip.org

 

[jrm@]

xz()

unxz is included in the base system.

 

[kilowattradio]

OK, I'm on a Mac, but was able to download a MacPort of XZ. Thank you.