I'm don't think there is a secularly celebrated version of Hannukah. If you have any references for this, please state them.
Christmas is celebrated as both a religious holiday (by large groups of people in the US and UK, which are large markets for Google) as well as a secular one.
Hanukkah is celebrated secularly by the large minority of Jews that are not religious. It's only celebrated and recognized so widely because of its close proximity to Christmas, the most important holiday in the United States, the celebration of commercialism.
Christmas is celebrated as both a religious holiday (by large groups of people in the US and UK, which are large markets for Google) as well as a secular one.