According to an article from MacWorld, Sun has committed some engineering resources to getting OpenOffice running on the Macintosh natively.

OpenOffice is a multi-platform office productivity suite that acts as a substitute for Microsoft's Office products.

Of particular interest is the rationale provided by Philip Lohmann, project lead at Sun: "If you look around at conferences and airport lounges, you will notice that more and more people are using Apple notebooks these days. Apple has a significant market share in the desktop space. We are supporting this port because of the interest and activity of the community wanting this port."