Link: Maths + Ubuntu | Bringing mathematics and (K)Ubuntu together

Welcome to Mathbuntu, where Mathematics and (K)ubuntu come together. The goal of Mathbuntu.org is to provide easy access to the best open source mathematics software available, and the best free** textbooks available. It is Ubuntu customized for learning, doing, and communicating mathematics. The software listed below forms the core of Mathbuntu. These applications put the world of mathematics at your fingertips.