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).

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 Soulver.
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).

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.

PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody looking for a feature rich calculator. It includes an optional RPN mode and multi-line display, a choice of button layouts, an extensive set of unit conversions and constants, a...




OpalCalc is a 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.




Introducing Best Loan Calculator, using methods trusted by financial professionals for years. It’s as easy to use as a regular calculator and helps with auto loans, mortgages, and other financing.




Hissab is a simple and intuitive calculator, unit-convertor and productivity application.




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


NumWorks designed an intuitive and evolutive graphing calculator to make learning maths easier.




Calcbot is a simple and beautifully designed calculator for your iPhone, iPod touch and iPad. You’ll never open the built-in Calculator app again.



Calcul.io offers realtime calculator with notepad like interface and advanced features like unit conversions, currency rates or date time math.

Convertbot is a unit conversion robot. Convert currency, length, mass, time and much more in an exciting new way! Converting numbers will never again be a mundane task. In addition to its innovative interface, our robot is smart enough to convert to and from mixed units.



Calculator with percentages, powers and functions. History with comments that is synced across all your devices. Cursor for editing anywhere. Simple interface with dark and light themes.



