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Open Source RealCalc Scientific Calculator Alternatives

The best open source alternative to RealCalc Scientific Calculator is SpeedCrunch. If that doesn't suit you, our users have ranked more than 100 alternatives to RealCalc Scientific Calculator and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to RealCalc Scientific Calculator are Qalculate!, Insect, Windows Calculator and OpenCalc.

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RealCalc Scientific Calculator Android's #1 Scientific Calculator. A fully featured scientific calculator which looks...

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  1. SpeedCrunch icon

    SpeedCrunch

    • Mac
    • Windows
    • Linux
    • PortableApps.com
    115 alternatives to SpeedCrunch 

    SpeedCrunch is a free, fast, high precision open source algebraic calculator with an intuitive interface and many features, such as variables, syntax highlighting, functions, persistent input history & more.

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    Features
    1.  Syntax HighlightingSpeedCrunch supports syntax highlighting for various programming and markup languages.
    2.  PortableSpeedCrunch can be used from a USB stick or similar with no prior installation.
    3.  Live PreviewInstantly see what your files and documents look like as you create them.
    4.  Ad-freeSpeedCrunch doesn't contain any form of external advertising.
    5.  Support for ThemesYou can use themes and templates to change the look and feel of SpeedCrunch.
    on kde
    on mac osx
    on vista
    SpeedCrunch vs RealCalc Scientific Calculator opinions
    pros, cons and recent comments
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    mixed hex and bin in/output and a bitmask display

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  2. Qalculate! icon

    Qalculate!

    • Mac
    • Windows
    • Linux
    106 alternatives to Qalculate! 

    Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation).

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    Features
    1.  Currency ConversionQalculate! lets you convert different currencies based on the latest exchange rates.
    2.  PortableQalculate! can be used from a USB stick or similar with no prior installation.
    Main window
    History


  3. Insect icon

    Insect

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    59 alternatives to Insect 

    High precision scientific calculator with full support for physical units (web and terminal versions).

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    Features
    Screenshot
  4. Windows Calculator icon

    Windows Calculator

    115 alternatives to Windows Calculator 

    A simple yet powerful calculator that includes standard, scientific, and programmer modes, as well as a unit converter. It's the perfect tool to add up a bill, convert measurements in a recipe or other project, or complete complex math, algebra, or geometry problems.

     Suggest and vote on features
    Features
    1.  Currency ConversionWindows Calculator lets you convert different currencies based on the latest exchange rates.
    2.  Ad-freeWindows Calculator doesn't contain any form of external advertising.
    Screenshot
  5. OpenCalc icon

    OpenCalc

    • Android
    • F-Droid
    53 alternatives to OpenCalc 

    Simple and beautiful calculator for Android.

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    Features
    1.  Ad-freeOpenCalc doesn't contain any form of external advertising.
    2.  LightweightOpenCalc consumes less device resources compared to similar apps.
    Screenshot
    Screenshot


  6. Simple Calculator icon

    Simple Calculator

    • Android
    • Android Tablet
    • F-Droid
    80 alternatives to Simple Calculator 

    A calculator with the basic functions and a customizable widget.

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    Features
    Screenshot
  7. NaSC icon

    NaSC

    60 alternatives to NaSC 

    Its an app where you do maths like a normal person. It lets you type whatever you want and smartly figures out what is math and spits out an answer on the right pane. Then you can plug those answers in to future equations and if that answer changes, so does the equations its...

    Screenshot
  8. Calculator++ icon

    Calculator++

    • Android
    • Android Tablet
    84 alternatives to Calculator++ 

    Calculator++ is an advanced, modern and easy to use scientific calculator.

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    Features
    Screenshot
  9. NumWorks Graphing Calculator icon

    NumWorks Graphing Calculator

    • Online
    • Android
    • iPhone
    • iPad
    125 alternatives to NumWorks Graphing Calculator 

    NumWorks designed an intuitive and evolutive graphing calculator to make learning maths easier.

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    Features
    Screenshot
  10. GeoGebra Scientific Calculator icon

    GeoGebra Scientific Calculator

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    113 alternatives to GeoGebra Scientific Calculator 

    Free online scientific calculator from GeoGebra: perform calculations with fractions, statistics and exponential functions, logarithms, trigonometry and much more!

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    Features
    Screenshot
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