Sketchup

Skecthup was acquired by Google. via Google Blog

Here is how their customers have been using the product:

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"Communication tool"

"Problem-solving tool"

"Productivity tool"

"Creativity tool"

"Problem-finding tool"

"Mass modeling tool only, not for presentations"

"What-if tool"

"Teaching tool"

"Prototyping tool"

"Design tool"

"Best sketching tool ever"

"Draft preparation tool"

"Marketing tool"

"Visualization tool"

"Level design tool"

"Consultation tool"

"A form of therapy"

"Understanding sunlight dynamics""

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Now if I wanted to create some speculation, I would say "After acquiring Writely, Google is getting into engineering workflow solutions"