OpalCalc!

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OpalCalc alternatives

  • SpeedCrunch

  • SpeedCrunch is a free, fast, high precision open source algebraic calculator with an intuitive interface and a extensive list of features, including: Unlimited Variables, Syntax Highlighting, Functions, with 'Automagic' Completion, 50 Decimal Precision, Input History and more...

    tags: Portable algebraic-calculation calculator live-preview mathematics
  • Qalculate!

  • Qalculate! is a multi-purpose desktop calculator for GNU/Linux and Windows. It is small and simple to use but with much power and versatility underneath. Features include customizable functions, units, arbitrary precision, plotting, and a user-friendly interface (KDE or GTK+).

    tags: algebra calculator currency equation-solving exchange-rates
  • Soulver

  • Maths on a Mac as it should be. Soulver is a new kind of calculator application which uses a simple yet powerful word-processor style interface instead of the traditional "button" approach to doing math.

    tags: calculator mathematics natural-language-processing
  • Windows Calculator

  • Windows Calculator, commonly known as Calculator from the application's title bar, is a calculation application included in all versions of the Microsoft Windows operating system. It can be activated by the command "calc" on most Windows systems.

    tags: bundled calculator windows-built-in
  • Numi

  • Numi is a handy calculator app for Mac. It allows to describe tasks the natural way and instantly get an accurate answer. For example, $20 in euro - 5% discount or today + 2 weeks. Numi is not limited to simple calculations, it can solve expressions of any complexity, with parentheses, mathematical operations and high accuracy (up to 38 mantissa digits).

    tags: calculator menu-bar menu-bar-app menu-bar-apps menubar-app
  • galculator

  • galculator is a GTK 2 / GTK 3 based calculator with ordinary notation/reverse Polish notation (RPN), a formula entry mode, different number bases (DEC, HEX, OCT, BIN) and different units of angular measure (DEG, RAD, GRAD). It supports quad-precision floating point and 112-bit binary arithmetic.

    tags: basic calculator gtk rpn xfce
  • Calculator Plus

  • Calculator Plus is a nice addition to hundreds of Calculator apps but with unique idea and innovative and user friendly designed buttons.

    tags: calculator
  • Frink

  • Frink is a practical calculating tool and programming language designed to make physical calculations simple, to help ensure that answers come out right, and to make a tool that's really useful in the real world. It tracks units of measure (feet, meters, kilograms, watts, etc.) through all calculations, allowing you to mix units of measure transparently, and helps you easily verify that your answers make sense. It also contains a large data file of physical quantities, freeing you from having to look them up, and freeing you to make effortless calculations without getting bogged down in the mechanics. »

    tags: calculator mathematics engineering unit-converter algebra
  • Notepad Calculator

  • For jotting down quick calculations. Type free-form text and see the results of any calculations appear in the margin.

    tags: calculator notepad mathematics arithmetic maths
  • CCCalc

  • CCCalc is a calculator with tape, you can correct any printed character with, and the tape recalculates everything itself.

    tags: calculation calculator customization tape
  • SimpleCalc

  • A calculator written in C#.NET 3.5 that aims to be simple and usable. Future plans include functionality above and beyond that of the standard windows calculator. (Requires the .NET 3.5 framework)

    tags: calculator mathematics
  • Omni Calculator

  • Omni Calculator is a startup aiming in solving all (hence "omni" in the name) small math problems you have in your everyday life. All of their calculators offer unparalleled ease of use and functionality. They work in real time and can solve for any variable. You are able to share the result with your friends and co-workers. They can be used on web, mobile or embedded on external websites with a slick, fully functional calculator widget.

    tags: sports statistics calculator mathematics fitness
  • Ruvenss Calculator

  • Calculator with log and printing capabilities.

    tags: calculator printing chrome-app
  • Numeric Notes

  • Numeric Notes – is not just a totally new way to count, but also possibility to keep and share calculations on your Mac.

    tags: calculator invoicing note-taking
  • CalcNote

  • CalcNote is a notepad calculator designed for smartphones. You can immediately obtain calculation results as soon as you've added any calculations on a line.CalcNote calculates instantly as you type. No need to tap Equals. You can do multiple calculations over multiple lines, and even connect the lines together using line references. When one line changes, the other lines update. If you make a mistake, you don't need to start again as you can edit your expression like in a text editor.You can also write memos for your calculations. »

    tags: android-apps calculator productivity-app