An announcement Tuesday by Sun Microsystems revealed a collaboration agreement between Sun and Google, in what is likely a move that presages Google's challenge to Microsoft's dominance in personal computer software, reports the AP, which adds, however, that the announcement "may be mostly a symbolic shot across Microsoft's bow signaling Google's intention."

Sun will offer Google's search toolbar with downloads of its free Java software. The companies also agreed "to explore opportunities to promote" other Sun technologies, including the freely available OpenOffice, an open-source alternative to the Microsoft Office suite. Java has been used to power web-based applications, standalone programs, cell phones and other gadgets across various operating systems.

Aside from search, Google has expanded its offerings to include free email, maps, instant messaging and video; last week, it announced a bid to provide free Wi-Fi to San Francisco.

Sun will offer Google's search toolbar with downloads of its free Java software. The companies also agreed "to explore opportunities to promote" other Sun technologies, including the freely available OpenOffice, an open-source alternative to the Microsoft Office suite. Java has been used to power web-based applications, standalone programs, cell phones and other gadgets across various operating systems.

Aside from search, Google has expanded its offerings to include free email, maps, instant messaging and video; last week, it announced a bid to provide free Wi-Fi to San Francisco.