Is there a search engine that tells where a certain font is being used commercially? For example which company is using it in their logo, etc.
A specific example is that I would like to know where the font "Danube Pro" is being used already (by which companies in their products or logos).
I don't mean everywhere (in the sense of legally secure) but those logos that are online on the web. I think from a technical perspective it could be done with certain algorithms to crawl websites and use some algorithms to create a database of such. Just like Google crawls for text/content and also since there exists font identification platforms, same could be done for what I described above. My question is therefore if it has been done. Or similar to reverse image searches, such as http://www.plaghunter.com/en/, where you can search where on the web an image is being used just based on the motive.
There is a brand database that does show images/logos at http://www.wipo.int/branddb/en/, but it does not allow you to search for font names.
Even audio logo databases exist, http://audio-logo-database.com/, now I am just looking for the same specialized on fonts.