OpenCalc has been discontinued. Similar apps include SpeedCrunch, which is free and open source. Other options are Fossify Calculator, Qalculate!, CalcYou and yetCalc. Calculators like OpenCalc are a crowded field, with more than 50 alternatives for Android, Windows, iPhone, iPad and Linux.
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 Plus is a nice addition to hundreds of Calculator apps but with unique idea and innovative and user friendly designed buttons.
Free online calculators for finance, health, education & daily life. 17+ tools including loan, BMI, GPA, mortgage & more. No signup needed.
Moffsoft FreeCalc is the ideal replacement for your standard Windows calculator - with adjustable size, visible memory value and digit groupings, this free calculator software is a simple and intuitive tool.
United States
United Kingdom
About A Basic Scientific Calculator Beautifully designed basic scientific calculator with support for percent operation, engineering exponent key, memory functions, and more.
In addition to the widget calculator, a scientific mode is included that links to eCalc’s advanced onlin.
United States
Real Time Calculator is a practical browser calculator that outputs results in real time!
Multi Share Calculator is a portable tool that allows anything to be shared proportionally!
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)
Simple yet very effective calculator with print capabilities and log registration.
Canada
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!
MYCalc2 is a powerful RPN programmable scientific/financial/statistical/Currency convertor calculator with units conversion, 2D functions study and multiple Skins. The program allows you to build statistical distribution graphs and calculate the values of their characteristics...
