OpalCalc Alternatives

OpalCalc is described as 'Brand new type of calculator for the PC. As easy to use as Notepad or a word processor, OpalCalc allows natural language in the sum and multi-line support so you can go back and adjust your previous calculations on the fly' and is a Calculator in the education & reference category. There are more than 50 alternatives to OpalCalc for a variety of platforms, including Windows, Linux, Web-based, Mac and Android apps. The best OpalCalc alternative is SpeedCrunch, which is both free and Open Source. Other great apps like OpalCalc are Qalculate!, Numara Calculator, Numbat and Qaltex.

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OpalCalc alternatives page was last updated

Alternatives list

  1. 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.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • KDE Plasma
    • Linux Mobile
    • Flathub
    • Plasma Mobile
     
  2. numr icon
     1 like

    A text calculator for natural language expressions, variables & unit conversions, with a vim-style TUI. Inspired by Numi.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Linux
    • Mac
    • Windows
     
  3. Schulrechner icon
     1 like

    The calculator you know from school.

    Cost / License

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    • Linux
    • Flathub
    • Flatpak
    • Online
     
  4. The Unsure Calculator is an online tool that lets you calculate with numbers you’re not sure about.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Online
    • Self-Hosted
     
  5. Figr icon
     5 likes

    Ever wanted to work something out, but your default calculator isn't powerful enough, and it's not worth creating a spreadsheet for?

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Online
     
  6. Numbr icon
     7 likes

    Numbr is a currency calculator, a notepad that understands your calculation. You can use notes with numbers alongside each other. And all your numbers are instantly calculated as you type.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    • Chrome OS
     
  7. NoteCalc icon
     3 likes

    NoteCalc is a handy calculator trying to bring the advantages of Soulver to the web.

    Cost / License

    Application type

    Platforms

    • Online
    • Self-Hosted
     
  8. Calculist icon
     2 likes

    Calculist is an open source application that facilitates effective thinking. Write down your thoughts, ideas, and data in the form of lists. Focus your attention by zooming in to a specific list, and zoom out to see the broader context.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Online
    • Self-Hosted
     
  9. Caligator icon
     3 likes

    A kickass, open-source calculator that lets you do calculations and unit conversions naturally, with features like:

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
     
  10. KCalc icon
     1 like

    KCalc is the software calculator integrated with the KDE Software Compilation.

    Cost / License

    Application type

    Platforms

    • Linux
    • Flathub
    • KDE
     
  11. Do you really need your calculator's on-screen number pad? (You know, the virtual keyboard?)

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Windows
     
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