# fxSolver Alternatives

fxSolver is described as *'Online math solver, equation library, graphing calculator and science/engineering problem helper'* and is a popular Calculator in the education & reference category. There are more than 100 alternatives to fxSolver, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and Android. The best alternative is SpeedCrunch, which is both free and Open Source. Other great sites and apps similar to fxSolver are Microsoft Office Excel, Wolfram Alpha, Qalculate! and GNU Octave.

- Multi Sum Calculator is a portable tool that calculates the sum of multiple values!
- Kalk is a convergent calculator application built with the Kirigami framework. Although it is mainly targeted for mobile Linux platforms, it can also be used on the desktop.
- Browser-based notepad built for math calculations.
- KAlgebra is a mathematical graph calculator included in the KDE education package. While it is based on the MathML content markup language, knowledge of MathML is not required for use.
- Calculator++ is an advanced, modern and easy to use scientific calculator.
- Calcpad is a lightweight mathematical platform for cloud and desktop. It parses simple text scripts and converts them into professional Html reports. Supports complex numbers, variables, functions, graphing, units and numerical methods.
- Free • Open Source
- Windows
- Online

- PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator.
- Paid • Proprietary
- Mac
- iPhone
- iPad
- Apple Watch
- Apple TV

- Z3 is a theorem prover from Microsoft Research.
- Free • Open Source
- Mac
- Windows
- Linux
- WebAssembly
- C (programming language)
- OCaml
- Python
- C++
- Java

No screenshots yet - A kickass, open-source calculator that lets you do calculations and unit conversions naturally, with features like:
- Free online apps bundle from GeoGebra: get graphing, geometry, algebra, 3D, statistics, probability, all in one tool!
- Free • Open Source
- Mac
- Windows
- Linux
- Online
- Chrome OS
- Android Tablet
- iPad
- Raspberry Pi