@corbet there's a special place in my heart for labor-of-love shareware utility software like this and the kind of people who spent decades honing it. i always think of vernon buerg's LIST.COM, this really beautiful little file pager which i first encountered on a zenith laptop running DOS some time in the late 1980s.
@corbet That's a blast from the past. I used xv around 1990 or 1991 on SunOS and later Solaris. I really liked its custom widgets.
@corbet (though based on the source... well, i'll spare myself wading any further into the dude's ideological & political affiliations.)
@corbet What's wrong with imagemagick? It's as simple as xv, and has an equally terrible interface, and supports many formats.