I never heard of WPS before. That looks like a neat idea. And I see they've already ported to Linux...but not for free. How complete is their SAS lanugage support?
Wikipedia's SAS Language page links to an article about a project called GNU DAP, which "was written to be a free replacement for SAS." Hmm...the project homepage has a footer reading, "Updated: $Date: 2007/01/05". And the latest entry on their FTP source download page is dated 2008 ... I'm not sure this is still an active project.
But, to answer your question:
I'd like to see R, and one of its GUI frontends (I've used R-commander) ported.
I just installed this pair under an Ubuntu variant on an Atom CPU netbook, just see if the Atom could handle it. And it did. I don't know how the ARM will do...
The R statistics language is growing in popularity right now, and broke into the TIOBE top 20: http://www.tiobe.com/index.php.....index.html
I don't know what's driving that growth, but maybe educators should pay some attention to it and help fill the demand.
I also liked Maxima. Maxima is a "computer algebra system" and it has a WX-widgets GUI frontend called wxMaxima, that provides "pretty print" rendering of symbolic expressions, and plotting capability. (A lot like Mathematica.)
I also installed Maxima and wxMaxima on my Atom system and they perform surprisingly well. Again, I don't know how it will perform on ARM.
But, there's already a Debian package for Maxima on ARM, so that's encouraging.
The Gnumeric spreadsheet contains pretty good implementations of statistical functions, in contrast to MS Excel: http://www.csdassn.org/softwar.....eports.cfm
And there's RGnumeric that lets you call R functions from Gnumeric...but their changelog looks like it was most recently updated in 2003. So, I'm not sure how current that is, but the mailing list still has some traffic, as of this month (Feb 2012):
Both the R and Maxima projects have Debian packages. I installed Maxima straight from the Ubuntu package repositories. And, while the R packages had to be installed from a 3rd party repository, Ubuntu packages were available.