[jevinskie]

Linear regulators are also ideal for low noise applications.

[CamperBob2]

Although not so much the 78xx parts. They're among the noisiest, by a couple of orders of magnitude.

[dfox]

But still, one of the most common applications for 78xx regulators outside of hobbyist and one-off applications is local regulation for some analog-ish noise sensitive-ish circuitry.