OpenAxiom is an open source platform for symbolic, algebraic, and numerical computations. It offers an interactive environment, an expressive programming language, a compiler, a large set of mathematical libraries of interest to researchers and practitioners of computational sciences. OpenAxiom strives to support ubiquitous, advanced, high quality open source computer algebra on major operating systems, in particular major Unix variants, GNU/Linux variants, Windows, and handheld devices. It aims at being the open source computer algebra system of choice for research, teaching, engineering, etc