Mark Zuckerberg dominated people's phones over the decade. Here are the 10 most downloaded apps, nearly half of which Facebook owns.

10. Twitter, which launched in 2006, made the list with one billion downloads over the decade.

9. YouTube was downloaded 1.3 billion times, and is the highest-ranking Google app on the list.

8. Chinese Internet giant Alibaba's UC Browser was downloaded 1.3 billion times, and in some parts of Asia the browser is more popular than Google Chrome.

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7. TikTok is one of the newest entries on the list, as it was only released in the US in 2018, but it has already been downloaded 1.3 billion times, according to App Annie.

Another analytics firm, Sensor Tower, puts TikTok slightly higher with 1.5 billion downloads as of November.

6. Video-calling app Skype was downloaded 1.3 billion times over the decade. It was acquired by Microsoft in 2012, and got a major upgrade in 2017 to stay competitive against Facebook Messenger.

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5. Snapchat is the only app not owned by Facebook to crack the top five, and the photo-messaging app has been downloaded 1.5 billion times.

4. Instagram has 2.7 billion downloads, nearly twice as many as Snapchat at No 5. Instagram was acquired by Facebook in 2012 for $1 billion.

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3. WhatsApp, the encrypted messaging service Facebook bought for $19 billion in 2014, has 4.3 billion downloads.

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2. Facebook Messenger, another messaging service owned by Facebook that spun out of its in-app chat feature, beat out WhatsApp with 4.4 billion downloads. US regulators are reportedly considering blocking Facebook's plans to more closely tie its messaging services together.

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1. Finally, Facebook itself topped the list with a whopping 4.6 billion downloads over the last 10 years.