If you look at [1] you can see some derivations from Milkdrop/Project M.

There were a lot of other, good visual plugins and software. VJ software, specifically, but also Libvisual just abstracts input and output, therefore allowing you to use all of these (supported) visualization plugins on any supported media player. It isn't much developed anymore these days, but this is the correct way forward.

Looking at the actors in Livisual [3] G-Force is decent but also a couple may be missing from earlier Libvisual releases. You may also like Lemuria [4]. Winamp's AVS is also FOSS [5].

[1] https://en.wikipedia.org/wiki/MilkDrop

[2] https://github.com/Libvisual/libvisual

[3] https://github.com/Libvisual/libvisual/tree/master/libvisual...

[4] https://github.com/dr-ni/lemuria-2.1.1

[5] https://en.wikipedia.org/wiki/Advanced_Visualization_Studio

Also, I'm working on AVS still, from time to time: https://github.com/grandchild/vis_avs/tree/dev

ProjectM is on github too

https://github.com/projectM-visualizer/projectm

Agreed. I would love Plex (or PlexAmp and then cast) to have some built in visualizations. And I have no idea why some of those streaming EDM channels on YouTube aren't doing music visualizations rather than ten second loops of video.

Milkdrop and Project M are both available as vis plugins for Foobar2k, on Windows at least: https://www.foobar2000.org/components/view/foo_vis_milk2

There are some visualizers in the Mac App Store. I'm using Ferromagnetic right now and like it well enough. There are still visualizers in Apple Music left over from the iTunes days but they're kind of lame.

I stumbled onto one years ago by accident, maybe an Easter egg or something. I came back to my computer (Mac) after several hours of iTunes playback to see a hitherto unknown visualization running, with fairly primitive-looking graphics by today's standards. It was not any of the visualizations available in iTunes at the time.

I filed a bug on it with Apple and they got back to me asking how the hell I had invoked this, because they'd never seen it before. Never did get to the bottom of it.

Intentional pun?

Project M is still around. I use it to project visualisations at house parties.