.sitx file — 7-Zip can't open it. What can?

I have a .sitx archive. I think this is an old Mac compressed archive format, but I need to open it in Windows.

7-Zip doesn't recognize it.

What should I use?


It was created by Stuffit, there is a free expander program to extract it.

http://stuffit-expander.en.softonic.com/mac