Mathics is described as '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' and is an app in the education & reference category. There are more than 10 alternatives to Mathics for a variety of platforms, including Windows, Linux, Web-based, Mac and iPhone apps. The best Mathics alternative is SageMath, which is both free and Open Source. Other great apps like Mathics are Mathematica, Calcpad, PTC Mathcad and Wolfram Language.
FormulaDesk Math is an Excel add-in that brings real symbolic math to Excel. View formulas as equations, plot formulas…instantly. All the tools that engineers and students need every day, now inside Excel.
Calculeaf is an online engineering calculation worksheet for unit-aware math, calculation notes, plots, templates, and shareable technical work.
