Mathematica on Amazon EC2

Still pretty much vapourware. "November 5, 2008--Wolfram Research announced an initiative today to develop a cloud computing service for users of their flagship technical computing software, Mathematica."

(Having said that, I'd expect Wolfram to do this sort of thing pretty well. Mathematica does stuff at a high enough level that automatic parallelization at least has a chance, and they've already got some of that for SMP systems in Mathematica 7. It'll probably need some tuning to make it effective in a cloud-computing context, where the communication overheads are higher.)

Also not Amazon-specific. "Nimbis Services will enable the Mathematica cloud service to access many diverse HPC systems, including TOP500 supercomputers and the Amazon Elastic Compute Cloud."

(Quotations are from the Wolfram announcement linked from the AWS article: http://www.wolfram.com/news/cloudcomputing.html .)