Thinking about it though, and after having looked through an other open source (L)CMS this does seem to be a bit of a difference.
1) Atutor likely to have a business model like that of Red hat (presumably a free version and an "enterprise" version of some sort).
2) There are other (L)CMSs that intend to survive financially only through support contracts of a completely free product.
I know that there need be no competition here. The products are all seperate. And I also know that the above two are not clearly divided.
One might say, or hope, that an "enterprise" edition is merely a supported version of the free edition, and that if anything the free edition has more functionality. Fedora is the "bleeding edge" version of Red Hat. The Enterprise edition is a supported version of that, perhaps.
All the same, I think that this is an issue of prime concern to educators. I know it is. My bosses have said so with regard to open source.
And there is always a degree of uncertainty in any venture.
But I have two quotes one above from Greg and another which is somewhat different. Basically the presence or absence of the word "version." Splitting hairs perhaps, but when it comes to an issue of this importance, perhaps splitting hairs is in order.
I don't suppose there will be any more bids, more toward 2, with the absence of the word "version"?!
Of course on the other hand, a commericial company with a stable commercial product has on the other hand a lot to commend itself.
Please leave it at the above if appropriate.
Tim