Experience and conventional wisdom say that whenever there is a really good idea ready to makes its entrance it often occurs to several individuals or groups. That might be happening, or going to happen, with online cosmic model calculators. So I'm hoping to hear comments about this including if you have seen this new kind of tabular output calculator at other websites I don't know about. It's very interesting and has a lot of teaching/learning potential. It goes beyond the one-shot format you get with Ned Wright or with Morgan's calculator. http://www.astro.ucla.edu/~wright/CosmoCalc.html The idea is that what you are really trying to do when you play around with a model of the expansion history is get an idea of the SHAPE OF COSMIC EVOLUTION. You want to grasp the overall shape of the expansion process. So instead of just putting in one scalefactor or one z and getting just one row of the table that describes only one slice of the whole spacetime shebang, why not let the user put in a range (start to end) and a STEPSIZE and get out a TABLE giving the key dimensional quantities for a whole bunch of slices? there are some interesting features, like the pear-shape or tear-drop shape (in proper or contemporary distance terms) of the light cone, that only stand out clearly when you see a tabulation with, say, ten or more rows. And the fact that the Hubble expansion rate has been decreasing so rapidly for much of the time---which translates into the Hubble TIME (the reciprocal rate) increasing---but less rapidly now and as time goes on. You also see that when you look at a table. So anyway, do others have some thoughts about this? Are there online tabulating cosmo calculators that you have used or know something about? Do they work for you and do something more for you than the one-shots?