Oracle has imposed a fee of US$90 per user on a plug-in for Microsoft Office that was available at no cost under Sun Microsystems' ownership.
The tool allows Word, Excel and PowerPoint users to read, edit and save documents in the ODF (Open Document Format), which is used by the competing OpenOffice productivity suite.
http://www.itworld.com/software/105184/oracle-now-charging-us90-odf-office-plugAlas I could see something like this coming