Good, free CAS for UNIX?

[HP67]

(05-20-2014 06:39 PM)Thomas Klemm Wrote:  [OT] Mathematica free for Raspberry PI

I read about that briefly earlier. Very nice that they give a free license. But probably not very useful.

(05-20-2014 07:57 PM)kusmi Wrote:  I was once using Maxima http://maxima.sourceforge.net

This is the one that I noted above that looks most promising on non-Intel.

(05-20-2014 08:40 PM)spinkham Wrote:  If you're not running anything too heavy, sage math cloud or Wolfram Alpha are zero install..

Absolutely NO CLOUD AND NO GOOGLE HERE!. But for occasional light use the Wolfram site is really cool.

(05-20-2014 09:40 PM)bhtooefr Wrote:  I believe this is the page you're looking for, Giac being the engine underlying Xcas (and it appears that Xcas is included in that source bundle)

It is not clear to me whether Giac has any front end (I think that's what Xcas is). At this point I don't think Giac is going to be useful alone. And unfortunately there are some nasty GPL pieces that are painful to build anywhere but Linux because of non-portable development practices gcc-isms and other GNU-dependencies. I generally keep my systems as GNU and GPL free as possible, so this is probably not going to be a good choice for me.

(05-20-2014 10:35 PM)Manolo Sobrino Wrote:  Reduce is extremely good and extremely powerful. As it has no bells nor whistles it doesn't get the appreciation it deserves. It's a 45 year old CAS focused on A, so no graphing, there's gnuplot for that.

This might be good if the platform I want to run it on is supported. It says it is based on two variants of LISP (both of which are obsolete since about 1989/1990 when Common Lisp won) but they are included in the source distro. If I can't get Macsyma to work then I'll look into this.

Thanks guys for all the suggestions.