PTC Mathcad is not available for Linux but there are some alternatives that runs on Linux with similar functionality. The best free Linux alternative is Maxima, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to PTC Mathcad and six of them are free and available for Linux so hopefully you can find a suitable replacement. Other interesting free Linux alternatives to PTC Mathcad are wxMaxima, Mathics, SymPy and OpenAxiom.
Maxima is a system for the manipulation of symbolic and numerical expressions, including differentiation, integration, Taylor series, Laplace transforms, ordinary differential equations, systems of linear equations, polynomials, and sets, lists, vectors, matrices, and tensors.
wxMaxima is a document based interface for the computer algebra system Maxima. wxMaxima provides menus and dialogs for many common maxima commands, autocompletion, inline plots and simple animations.
Mathics is a general purpose computer algebra system (CAS) and designed to be a free, light-weight alternative to Mathematica. It's programmable using a Mathematica like language and uses a web interface for user interaction.
SymPy is a Python library for symbolic computation. The stated goals of the library are to become a full-featured computer algebra system and to keep a simple code base to promote extensibility and comprehensibility.
Graphical frontend for GNU Octave. Edit formulas in native mathematical notation. Available / tested for Linux x586 / x86_64, WinXP, Vista, and MacOS.
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