It’s been six years since I last touched AnimatedPNG, yet it still gets downloaded around once per day on average. For such a simple little library it’s clearly useful to a reasonable number of people, which is very gratifying.
I once had grand plans to add loads of new features to the library, but to be honest I really don’t think it needs them – in fact, I think the simplicity is probably its greatest feature.
Having said that, I was asked for a simple way to clear out the custom frame delays (that allow you to have variable animation rates), rather than having to reset each frame by hand. So I did it, as it doesn’t add any complexity to its use. Details are on the AnimatedPNG pages.