Yet Another Distribution alternative is
CentOS,
which like White Box Linux, is a rebuild of the Red Hat Enterprise
source rpms, with all non-open-source Red Hat content removed, etc.
Why you'd pick one over the other, I've no idea.
The same folks also do
cAos,
which is a different rpm based distribution, not based on Red Hat.
Personally, I may experiment with cAos at some point because the
Warewulf
cluster folks recommend it, but every time I look again at all these
random different rpm-based distributions, I become annoyed and am
again inclined to stick exclusively with Debian.
One little anecdote I say recently: Someone mention that their group
had installed Debian on their Beowulf cluster - more than 7 years ago.
Despite two major hardware upgrades, no re-installs at all, just lots
of "apt-get upgrade".
I don't know of any other distribution that has actually
maintained a solid upgrade path for 7+ years. Red Hat never even came
close - even back in the Red Hat 6.x days c. 2000 or 2001, long before
they orphaned all their non-Enterprise users, upgrading from one point
release to another often didn't work anyway.
It is nice though to see many of the rpm-based distributions finally
adopting apt-get or yum, and attempting to give Debian some
competition.
