Open Source BSD Calculators

Integrated Development Environment for some microcontrollers based on 8051(e.g. AT89S8253). Supported languages are Assembly and C. It has its own simulator, assembler, editor and many other tools. See the project web site for more details and the newest updates.

TILP (formerly GtkTiLink) can transfer data between Texas Instruments graphing calculators and a computer. It works with all link cables (parallel, serial, Black/Gray/Silver/Direct Link) and it supports the TI-Z80 series (73..86), the TI-eZ80 series (83PCE, 84+CE), the TI-68k series (89, 92, 92+, V200, 89T) and the Nspire series (Nspire Clickpad / Touchpad / CX, both CAS and non-CAS). The project is now managed on Github, https://github.com/debrouxl/tilp_and_gfm . It uses the libti* libraries, https://github.com/debrouxl/tilibs . Install script for *nix: https://github.com/debrouxl/tilp_and_gfm/blob/master/tilp/trunk/build/scripts/install_tilp.sh

GraphCalc is a very gui graphing calculator. It has been called a good replacement for a TI-85. It is a must for any high school math student.

The Finanx 12c is a free software that mimics the HP-12C financial calculator. This software was developed for educational purposes. IT'S NOT RECOMMENDED using this calculator for professional calculations. If you find any bugs, please, let me know. Click "Bugs" in the menu bar to report bugs found.

A simple CPU simulator whose goal is to make assembly learning easier. This goal is reached giving a simple calculator, called ENIAC, with a simple CPU, called vCPU. The vCPU's instructions are very simple and easy to understand.

Leibnitz is the calculator you've always wanted (even if you didn't know it!), short of handwriting recognition. FAQ: https://github.com/jafl/jx_application_framework/tree/master/programs/leibnitz#readme ChangeLog: http://leibnitz.sourceforge.net/ChangeLog.html

pfcalc is a pipe friction calculator using the Darcy-Weisbach equation. gpfcalc is a Gtk front-end for pfcalc. Qpfcalc is a Qt front-end for pfcalc.

System independent command line calculator written in C (C99 standard). Expression is first converted to Reverse Polish Notation and then evaluated.

Virtual TI emulates nearly the entire line of Texas Instruments graphing calculators, and offers features that speed up both debugging and testing of calculator programs. Windows version is quite stable but the Linux/OSX version is only in planning.

Simple matrix calculator with TUI (shell-like) able to do basic matrix operations including fast computing of determinant.

Calx is a calculator program based on RPN (Reverse-Polish Notation) that allows you to compute complex mathematical expressions containing brackets, mathematical functions etc.

PG Calculator is a powerfull scientific calculator and an excellent replacement for standard calculator. It ofers full customizable user inteface and looks like real calculator on user desktop. PG Calculator works in Algebraic and RPN mode.

Calculator software helping to determine L-T4 and L-T3 substitution dosage according to the algorithms provided by the European Thyroid Association (ETA).

X-Bc (formerly: xbc) is a graphical user interface to the command line calculator bc. All Inputs and Outputs stays visible for editing and comparing. Functionality: trigonometry, number-theory, exponential funcs, scientific constants, primenumbers ...

LCalc is a calculator for logic expressions. It support all standard logic operators (and,or,not,xor,...) and any user-defined operators . Features include generation of value table from formula and vice-versa.

It's intended to be used by high school students to keep their absence in school lessons under an acceptable limit (some of us have realy a great problem with that). It computes some statistics. I hope it will be useful :-)

An advanced calculator program that supports programming/scripting, a variety of mathematical functions, and a graphing utility.

In addition to standard calculator functions, you can perform trigonometric calculations, binary, decimal, hexadecimal. Are included in the calculation of the programs tables, fibonacci, factorial, random number, charting, statistic basic, fast random generator number 1-90, generation and a system for fast calculation of the percentage, calculating the perimeter and area of plane geometric figures. This is also a program to create constant and recall among other functions is also a mini file editor text.

BigAl is a free open source and platform independent software for calculating really BIG numbers. It supports not only standard arithmetic, but also exact period determination, predefined factorials, fibonacci with seeds, factorization, nth root, etc

This project implements calculations for the Climate Equity Reference Project's Calculator (CERc).

The main goal of this project is to provide small systems (like the “GameBoyAdvance”) with a tool to solve arithmetical expressions, trigonometric or logarithmic functions, etc, in an open and extencible way.

A simple multi-platform DXM dosage calculator. Written in Java.

EVAlgebra , symbolic Clifford algebra calculator (geometric algebra) , is an Eigenmath adaptation. EVAlgebra support space dimension from 1 to 4 with arbitrry signature. It is fully documented at evalgebra.org. You may write your own scripts to resolve specific problem.

Evrika is a science simulator and advanced calculator, which is based on modules. Modules are libraries containing definitions of concepts that can be used in the simulation. By definitions we mean properties, actions, reactions, etc. Evrika is used for creating both simulations and modules, so you can build your own module of elements, then use them to create virtual experiments and simulations. Also, you can make advanced calculations. Evrika is basically an executable that reads and interprets code, outputing result. Each new version will offer new possibilities to define your elements and use them, so it is important to always have the last release. Of course, Evrika is backward-compatible, cross platform and free to use. In the near future an advanced editor and viewer will be created, so you can better manage your code and view the results.

The Fung-Calc is an advanced, yet easy to use graphing calculator that supports graphing in both 2D and 3D. Several different plot types are available and graphs can be animated.