UPDATE: Chemlambda collection of animations is the version of the collection hosted on github. The original site is under very heavy traffic (in Jan 2020). Small images, about a 1/2 of the collection, due to memory limitations. But you can play the simulations in js!
I started a page of chemlambda collection samples. I would rather put videos like this one (I have hours of them) which I used in this presentation.
However soon there will be a playable chemlambda thing 🙂