Measuring OpenOffice Marketshare
While this article is terribly written, it is useful for its collection of marketshare estimates from IDC, Jupiter, Gartner and Forrester. (Unfortunately, it has no links to any of their specific reports.)
The first three all estimate OpenOffice’s global marketshare at 10%, while Forrester estimates 15%.
Downloads of OpenOffice, tracked from the project site at www.openoffice.org, exceed 42 million, while tens of millions of additional copies from CDs, BitTorrent, and network sharing remain uncounted.