XCALC is my little RPN calculator completely free to use, and still downloadable. XCALC is now a DEAD project. No work has been done on this project since 2012, and nothing more will be done either.

Test Cal is described as 'Brand new calculator app designed specially for youngsters. You can use this app for your mathematical problems. Its special feature is its simplicity of organized features like using of sum or divide with single touch' and is a Calculator in the education & reference category. There are more than 25 alternatives to Test Cal for a variety of platforms, including Windows, Android, Mac, Linux and Web-based apps. The best Test Cal alternative is SpeedCrunch, which is both free and Open Source. Other great apps like Test Cal are Qalculate!, OpenCalc, fxSolver and Numbat.
XCALC is my little RPN calculator completely free to use, and still downloadable. XCALC is now a DEAD project. No work has been done on this project since 2012, and nothing more will be done either.

Power calculator for Android. Has Calculus, Algebra, 2D/3D Graphing and other features.



Online graph sketching app that can graph functions and numerically solve differential equations.

A graphical scientific calculator that is easy to use and has some advanced functionality such as vector arithmetic and variable solving.




Rule of 3 Calculator is a portable tool that allows you to apply the mathematical Rule of Three in an easier, faster and more practical way!

Multi Share Calculator is a portable tool that allows anything to be shared proportionally!

Real Time Calculator is a practical browser calculator that outputs results in real time!

EBTCalc is a Reverse Polish Notation (RPN) calculator that can have custom buttons. Custom buttons are programmed in Javascript with a convenient editor. EBTCalc runs on Windows 10, OSX, and Linux as well as Android. EBTCalc is open source.


Calculator is a simple 4 function calculator, with a panel that has more advanced functions when you need them. It includes history, real time graphing, base conversion, and more. It also comes with a lockscreen widget, a floating calculator, and a wear app so you can use...
ImaginaryInfinity Calculator is an expandable calculator. It's command line interface is designed to resemble that of some graphing calculators. New functionality can easily be added by installing user created plugins.




Calculator software try too hard to imitate the real thing. They end up big and clunky and their limitations are carried on. Kalq is a user experience experiment to discover an elegant solution to everyday calculations.

Scientific calculator is a calculator app developed to suit student need. They can use the calculator for learning, doing homework’s, and experiment with different math functions provided by the calculator including most of features of fx 991 es plus.


