Caligator is described as 'A kickass, open-source calculator that lets you do calculations and unit conversions naturally, with features like:' and is a Calculator in the education & reference category. There are more than 100 alternatives to Caligator for a variety of platforms, including Android, Windows, iPhone, Mac and iPad apps. The best Caligator alternative is SpeedCrunch, which is both free and Open Source. Other great apps like Caligator are Qalculate!, fxSolver, Numi and GeoGebra Scientific Calculator.
TTCalc is an open source bignum mathematical calculator. It features arithmetical functions, trigonometric functions, inverse trigonometric functions, hyperbolic functions, inverse hyperbolic functions, logical operators, logarithms, functions for converting between degrees and...
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.
CALCU is a simple, yet beautiful and powerful calculator. Customize the keypad as your need, change theme as your taste, CALCU is the calculator made just for you!
FEATURES
Elk is a super fast way to convert currencies, interacting with set values across increments accessed using simple swipes. No need to enter values with a keypad, it lets you just swipe your way to the value you need.
United Kingdom
Multi Sum Calculator is a portable tool that calculates the sum of multiple values!
Excalibur for Windows 32-bit version is a freeware full featured RPN-only calculator. This is a serious calculator for serious users. Excalibur takes up a small amount of resources for all it does so well.
Calculator Plus is a nice addition to hundreds of Calculator apps but with unique idea and innovative and user friendly designed buttons.
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
Arity is a calculator app that's fast and simple to use, and powerful.
Features:
open source (Apache 2). tiny (2K SLOC and 50KB binary) user defined functions and variables complex numbers basic function graphing.
Multi Share Calculator is a portable tool that allows anything to be shared proportionally!
