Ok, downloaded both the Linux and Windows versions. Looks and works just like Open Office. Just different packaging.
Says on their website they have some different features that OO does not. Didn't see anything that different for me. But, maybe something important to someone else.
Tried opening a Word document that I test with that has a massive table of contents and links in the .doc but had the same result as OO. The Table of Contents does not work.
For me, looks like it is still about 95% compatible when with Microsoft Office. (IMHO)
You gotta love Open Office. No need for Microsoft Office.