Nieman Journalism Labs introduced an online encyclopedia-style website not too long ago where information about big media players is constantly being updated.
On the site’s about page Nieman Lab describes what you’ll find on Encyclo:
Our initial focus is on the companies and organizations that are having a big impact on the future of news. That includes a lot of traditional news organizations doing innovative work (like The New York Times, The Atlantic, The Guardian, and CNN) and a lot of newcomers whose business models are made possible by the Internet (like Talking Points Memo,GlobalPost, and West Seattle Blog). Some are nonprofits focusing on high-end investigative and watchdog work; some are building around cheap commodity content or aggregation and hoping search engine optimization.
If you’re referencing a particular media or technology company on a website or blog you can grab code from the Encyclo site to give readers additional information about that company.