[JoelSanchez]

I'm a Laravel developer and I know about random_compat because of the infamous "There is no suitable CSPRNG installed on your system" message. So I guess it's Wordpress, Laravel, and maybe Symfony too?

[CiPHPerCoder]

Laravel and Symfony get counted through Packagist. WordPress does not.

Basically, 28 million + (number of WordPress 4.4+ installs) = total installed base of random_compat