Jon Alper's probably insufficiently humble opinion

Way back when, as in, at the turn of the century, I worked on a project called “Evolution”.

One of the coolest things the Evolution web team built was Deep Time.

I was and I am very proud of what the Evolution team built.

I discovered this is in beta: http://www.chronozoomproject.org/ and I’m very impressed.  The same basic idea evolved, expanded and very, very cool. Still fiddly but very cool.