I know, it has been already requested here, 8 years ago.. But..
I really appreciate Q-Dir, even if I don't really use it (I'm a qttabbar lover to be honest). But by browsing its developer's page, I've found a lot of nice stuff, including → FontViewOK.
So, it would be nice if this sofware is added to the PA list.
Description: A simple software to view & compare installed fonts.
Other: Owner is OK (to portablize his app).
PS. I've mailed him yesterday at 16:30 UTC he answered "It's O.K." at 17:01 UTC.