This video[0] (dated Nov 29, 2016) says 381 forked packages. That's not nearly as bad as it sounds because many individual software projects are divided up into multiple packages.
For example, libvirt[1] produces 9 packages consisting of: libvirt-bin, libvirt-clients, libvirt-daemon, libvirt-daemon-system, libvirt0, libvirt0-dbg, libvirt-doc, libvirt-dev, libvirt-sanlock.
The video is rather interesting for learning about how the project came about and how it works in general.
For example, libvirt[1] produces 9 packages consisting of: libvirt-bin, libvirt-clients, libvirt-daemon, libvirt-daemon-system, libvirt0, libvirt0-dbg, libvirt-doc, libvirt-dev, libvirt-sanlock.
The video is rather interesting for learning about how the project came about and how it works in general.
[0]: https://www.youtube.com/watch?v=wMvyOGawNwo
[1]: https://git.devuan.org/devuan-packages/libvirt/blob/master/d...