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Half of the entire internet is Meta properties.
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That’s the other half.

Coincidentally also PHP.

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Facebook started out PHP; but they ship-of-theseus'ed it into Hack by replacing the standard library, the language, and the runtime engine, so now it's a totally different thing with only a few superficial similarities (FWIW IMO Hack is much better than PHP, I'm sad that it never gained traction...)
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Much of what was good in Hack just got rolled into PHP.
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And if it's not cpanel, it's Plesk
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