"We partnered with Sun to make a free version of StarOffice available in the Google Pack because we believe that users will benefit from access to a free, full-featured office suite for the desktop, " Google said in a statement
"And we’ve also always believed that users should have choice in their online and PC experience."
StarOffice usually costs $70 (£35) but is free as part of the latest version of the Google Pack.
Although details of the deal haven't been officially announced, Google is thought to be paying its creator Sun to distribute the software for free.
StarOffice may eventually be supported by embedding adverts into the software.
Sun and Google originally partnered to tie their products closer together back in October 2005.
The inclusion of StarOffice in the Google Pack has sparked internet rumours that Google's own Docs and Spreadsheets service will be integrated to work with office suite.
Climate change likely forced inhabitants of Indus Valley civilisation to resettle in the Himalayan foothills
Shift in weather patterns made agriculture almost impossible in the Indus Valley region
Researchers claim that the magnetic properties of a thin-film material can be controlled by applying a small voltage
Dubbed Antlia 2, the ghost galaxy sits just 130,000 light-years away from the Milky Way
Delays to the roll-out of age verification for adult websites hasn't stopped government from considering extending them to more websites