I see on HN that John Bradley, the creator of xv, has died:

https://news.ycombinator.com/item?id=47534086

The real announcements, alas, come from sources that I am unwilling to link to.

Xv, an image viewer/editor, is one of those tools that hit a peak of usability that really hasn't been matched since. It supports a wide range of image-manipulation functions, and has an interface that gets the job done quickly. I've sort of moved away from it over the years, but I still keep it around.

RIP, John, you made something good.
John Bradley, author of xv, has died | Hacker News

@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 (though based on the source... well, i'll spare myself wading any further into the dude's ideological & political affiliations.)
@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.