It is fairly common knowledge that Facebook is the most globally used social networking site. But it looks like Zuckerberg is not content with his company holding that title alone.

Facebook has already purchased the social photo app Instagram and has just announced the acquisition of instant messaging app Whatsapp.

Facebook also has its own social app in the form of its Facebook Messenger service, and of course good old vintage Facebook, which has hung onto the slot of most downloaded app for what seems like forever.

The table below, provided by App Annie, shows that Facebook now owns four of the five most downloaded apps, outside of gaming. Talk about having a hold on the market!

app downloads

"Social messaging platforms are an important growth area in mobile apps as highlighted in our 2013 global retrospective, with many players listed in the worldwide top ten rankings, said Marcos Sanchez, VP Global Corporate Communcations at App Annie.

"The acquisition of WhatsApp highlights their importance, as does the fact that the other players, Kakao, Kik, Line, Tango and Tencent, have all created platforms with large installed bases and successful monetization strategies. Given the potential growth and active usage, Facebook is acquiring more than technology, it now has a foothold into the social messaging arena."