Sage (www.sagemath.org) is a free, open-source, mathematics software system licensed under the GPL. It combines the power of many existing open-source packages into a common Python-based interface. Its mission is to create a viable free open source alternative to Magma, Maple, Mathematica and Matlab. It was originally developed on Linux but people are working on porting it to a variety of other OSs - Solaris, OS-X and Windows and I'm working on a FreeBSD port.
My status can be found at http://wiki.sagemath.org/freebsd/sage-4.1 If anyone is interested in assisting with this effort, please contact me. -- Peter Jeremy
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