Orkut was a Google project from Orkut Büyükkökten's 20% time.
I feel stupid for not coming up with prominent examples like YouTube/Blogger, but these are less 'generic' than things like 'Glass,' 'Play,' or 'Plus.'
Last year there was a lot of news about them possibly renaming Picasa as Google Photos and Blogger as Google Blogs, though that clearly never happened.