SageMath: <a href="http:&#x2F;&#x2F;www.sagemath.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.sagemath.org&#x2F;</a><p>I think this is a cool open source project. My sister is a teacher. I wouldn&#x27;t recommend this over Mathmatica to her. It&#x27;s level of polish would require attention that could better be focused on here students.<p><i>It builds on top of many existing open-source packages: NumPy, SciPy, matplotlib, Sympy, Maxima, GAP, FLINT, R and many more.</i><p>Is just noise that doesn&#x27;t solve her problems or help her students.