Two great tastes that taste great together. Jamie Zawinski’s XScreensaver for macOS and Jared Tarbell’s substrate generative art algorithm. Stunningly beautiful on a 27” iMac.
Seeing as how I’ve actually used XScreensaver on 1990s vintage UNIX workstations, and also mostly reimplemented substrate for my own ends, I’m embarrassed to learn substrate has been in XScreensaver since 2004. I’ll blame it on being distracted by the XMatrix digital rain plugin. That’s the one I default to using via XScreensaver. Love the little Matrix Reloaded “Easter egg”. The randomizer feature is looking better though, now that you can make useful subselections of the available screensavers.