SageMath 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.
Mission: Creating a viable free open source alternative to Magma, Maple, Mathematica and Matlab.
SageMath is developed by an international community of 200 researchers, teachers and engineers. Four members of GALaC are contributors to the software and active promoters in the community. GALaC employs a full time Sage developer (Erik Bray) since 2016.