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  Calculator.org - http://www.calculator.org/
Calculator resources including free download of scientific engineering, statistical, and financial calculators.
  http://www.ifigure.com/ - http://www.ifigure.com/
Guide to online calculators, including those designed for home, travel, finance, health, and small business.
  Constructive Reals Calculator - http://www.hpl.hp.com/personal/Hans_Boehm/crcalc/CRCalc.html
An RPN calculator applet and supporting Java library.
  http://www.sicyon.com/ - http://www.sicyon.com/
Online graphing calculator.
  http://www.webcalc.net - http://www.webcalc.net
Collection of free web based calculators for many subject areas.
  Online Matrix Calculator - http://www.bluebit.gr/matrix-calculator
Calculates matrix determinant and inverse. Performs LU, Cholesky, QR, SVD decompositions. Calculates eigenvalues and eigenvectors.
  Easy Date Converter - http://www.hermetic.ch/edc/edc.htm
Adds a number of days to a date, calculates the number of days between two dates, and converts among Gregorian dates, Julian dates, Julian day numbers and ordinal dates of the form yyyyddd. Supports batch computation.
  gNumerator - http://numerator.sourceforge.net
A interactive computer math system that uses standard JavaScript as the scripting language, and a collection of re-usable math oriented components such as a complete MathML DOM implementation, and a MathML viewing / editing control.
  Scientific Calculator - http://www.creativearts.com/scientificcalculator/
Javascript calculator with basic scientific functions.
  Unit Conversion Tool - http://www.accelware.com/Unit_Conversion_Tool/
Convert between 2200 units in 78 measurement categories. Includes units for length, mass, temperature, volume, area, speed, pressure, energy, power, force, fuel consumption, flow and torque.
  Pocket Calculator - http://www.df.lth.se/~mikaelb/pocketcalc-enu.shtml
Online calculator, written in Java. Includes Square root button and number memory. Source code can be downloaded.
  Speakeasy - http://www.speakeasy.com/
A user-oriented software package that allows non-programmers the opportunity to explore the computational power of their computer. Free trial download.
  GCalc -- Java Mathematical Graphing System - http://gcalc.net
Free online graphing calculator for education use with 2d, 3d, cartesian, polar, calculus, differential equations, scientific, implicit function components.
  Fung-Calc - Graphing Calculator - http://fung-calc.sourceforge.net
2D and 3D graphing calculator for Linux with multiple graphing modes.
  Monachos Calculators - http://www.monachos.gr/eng/calculators/calculators.htm
Online calculators with variety of engineering functions, including unit conversion, periodic table, piping applications, and electrical applications.
  Calculator Directory - http://www.pc-calculators.com
Extensive variety of software calculators collected in one directory. Scientific, graphing, loan and mortgage, currency and conversion calculators.
  http://www.encalc.com/ - http://www.encalc.com/
Free online scientific calculator supporting formulas and unit calculations.
  PG Calculator - http://www.pgcalc.net/
A scientific calculator with full customizable user interface. Algebraic and RPN mode. Windows; shareware trial version.
  efg's Computer Lab: Cyclic Redundancy Code Calculator - http://www.efg2.com/Lab/Mathematics/CRC.htm
Lab Report about computing CRC-16 and CRC-32 values using Delphi. Includes links and literature references.
  Volume of Partially Full Cylinders, Spheres and Cones - http://www.lmnoeng.com/Volume/CylConeSphere.htm
Java applet for partially full cylinder (on side), sphere, and cone.
  http://ttcalc.sourceforge.net/ - http://ttcalc.sourceforge.net/
An open source mathematical calculator. Features include arithmetical, trigonometric, inverse trigonometric, hyperbolic and inverse hyperbolic functions, logical operators and logarithms.
  http://calculadora.edu365.com/ - http://calculadora.edu365.com/
JAVA applet that allows mathematical online calculations.
  X-Bc - a GUI to bc - http://x-bc.sourceforge.net
X-Bc is desktop calculator that provides lots of functionality for scientific working. Input and output stay visible at all time for correction and comparation. It's a frontend to bc.
  Calculators by Ken - http://www3.sympatico.ca/prentice
Reference programs written in VB3. Includes common mathematical formulas.
  DreamCalc Pro - http://www.dreamcalc.com/
Photo-realistic scientific and financial calculator for Windows. Free trial download.
  3gr Technologies - http://www.3grtech.com/
Sells calculator software for engineers, businesses, and science. Applications for PCs, Apple IPhones, and smartphones.
  http://www.syntan.net/ - http://www.syntan.net/
A calculator of math functions based on syntax analysis with living graph. Free download.
  SymbMath - http://www.symbmath.com/
Online calculator, math handbook, symbolic math and Computer Algebra System.
  RPN Calculator - http://www.computersciencelab.com/RPNCalc.htm
This Windows programs emulates a fully programmable HP29C RPN calculator that has been augmented with linear curve fit and graphing capability. It was written to serve as a fun introduction to computer programming.
  Wahoo Software - http://www.xmlcreate.com/
Financial desktop calculator.
  Vorwerk & Stengel GbR - http://www.vorwerk-stengel.de
Offers RealCalculator, a scientific calculator and function plotter. German and English.
  Multi-Function Calculator - http://www.rjsoftware.com/FNA/
Multi-function shareware calculator, and unit conversion utility for Windows. Four modes of operation: statistics, trigonometry, base-n, and unit conversion.
  Runiter Company - http://calculator.runiter.com
Provides a scientific calculator and graphing calculator to download or try online.
  Online Calculator - http://calculator-online.info/
A collection of online calculators
  Bit Calculator - http://www.bit-calculator.com
Online calculator that makes conversions between bits, bytes, kilobits, kilobytes, megabits, megabytes, gigabits, gigabytes, terabits, terabytes, petabits, petabytes, exabits, exabytes, zettabits, zettabytes, yottabits, yottabytes.
  AbaCal Beta - http://www.abacal.com/
Free online math calculator with formula library. Provides a getting started document to help run abaCal and use it's full potential.
  http://homepage.mac.com/sobrietyhighwest/svgcalc/ - http://homepage.mac.com/sobrietyhighwest/svgcalc/
A scientific graphing calculator that runs in W3C-compliant web browsers. Features calculations, graph functions, inequalities or data sets, differentiation or integration.
  Online Expression Calculator - http://www.calcmachine.com/online-calculator.php
Supports basic arithmetic, trigonometric and logarithmic functions.
  Pc Calculator - http://pc-calculator.sourceforge.net/
Provides a note and formula editor combined with an advanced scientific calculator.
  Formula Suite - http://formulasuite.com/
Home of the TI-89 math program Formula Suite 2005 along with other related math programs for TI calculators.
  Date Calculator - http://www.datecalculator.com/
Perform date math, calculate date differences, and organize data and events.
  BAC Computer Software - http://www.bacsoftware.co.uk/fcalc1/
Calculator that performs the basic arithmetic operations on fractions and then at the press of a button gives you a detailed explanation of how the computation was done.
  Jason's Calculator - http://sourceforge.net/projects/calculator123/
Open source calculator application for the Windows platform.
  Wise Calculator Homepage - http://pmikh.chat.ru/
Scientific and engineering calculator for Windows.
  UnitMath - http://unitmath.com/
Simplifies calculations involving numbers, units, and precision.
  Matrix Calculator - http://mathematics.ifrance.com/index_gb.htm
Online Java calculator for matrix operations.
  5000 Digit Calculator - http://gvhome.001webs.com/bcalc.htm
A calculator that takes calculations out to many, many digits.
  sCal and sCal2 - http://scal-2.sourceforge.net
Small, open source (free), scientific and engineering, JavaScript-programmable calculators.
  1st Calculator - http://www.romanlab.com/1stcalc/
Scientific calculator.
  Pocket 16C Calculator - http://www.pirrama.com/
HP-16C emulator calculator for Pocket PC, by Pirrama Development. Free trial download.
  Matrix Calculator - http://members.shaw.ca/mtx/matrix.htm
Calculator for basic matrix operations. A demo version download is available.
  Linear Algebra Calculator - http://www.angelfire.com/space/matrixcalc/
mcalcdos is a free command line linear algebra calculator capable of matrix, vector and polynomial operations in real and complex fields.
  My Ten Key - http://www.mytenkey.com/
A realistic ten key calculator designed by a CPA.
  Jason's Calculator - http://calculator.8m.net/
The homepage for an easy to use multipurpose shareware calculator.
  Scientific Advantage Calculator for Pocket PC - http://www.advantagecalculators.com/main.aspx?PID=SciProduct
Calculator works with feet-inch-fraction dimensional values and includes advanced math functions, and automatic solvers.
  http://www.addsup.net - http://www.addsup.net
PC function calculator that operates in Windows.
  Online Calculators - http://www.online-calculators.co.uk
A collection of everyday use calculators and converters written in Javascript and PHP, available to use and download.
  PractiCalc Windows Calculator - http://www.practicalc.com
PractiCalc is a calculator and conversion tool for all 32 bit windows platforms. It provides result of calculations they are typed.
  Fornux PowerCalc-GX - http://www.fornux.com
A scientific calculator for Windows that can plot functions and diagrams with many mathematical functions for statistics and algebra.
  High Precision JavaScript Calculator - http://www.petting-zoo.org/Calculator.html
A JavaScript Calculator that adds, subtracts and multiplies fairly large numbers. Functions are added in my copious free time.
  Archimede - http://mcz.altervista.org/index_in.html
A powerful calculator for Linux. Algebric, RPN, vectors, matrices, quaternions, System, equations, complex numbers, solution of triangles, measure conversion. License GPL.
  ScriptConsole - http://www.flashpeak.com/scriptcon
Mathematical calculations using scripts and commands in a console-based multiple-window interface using the Microsoft VBScript engine. Windows; shareware.
  Quadratic Equation Calculator - http://www.1728.com/quadratc.htm
Calculator for solving a general quadratic equation.
  http://www.binarythings.com/hidigit/ - http://www.binarythings.com/hidigit/
Powerful calculator for students and teachers. Five number systems, full complex numbers support, and 15-digit maximum precision.
  16 Function Webpage Calculator - http://www.onlinecalculator.info
Scientific web page calculator, written in JavaScript.
  GoldfishSoft - http://homepage.mac.com/goldfish1/
Free software for the Macintosh. FrakKalk, the newest GoldfishSoft Program, is a fraction calculator for Mac OS X.
  Scientific Calculator - http://www.mathpad.com/public/htmls/main/left/calc/CalcInfo.html
Java applet online calculator.
  Stack Scientific Calculator RPN - http://homepage.bluewin.ch/cusipage/scicalc.html
Javascript scientific calculator using RPN.
  Printing Calculator by Auroa Binary Systems - http://www.angelfire.com/biz/ccsprog/Calculators.htm
Desktop printing calculator. Prints in columns and color on standard-sized paper.
  Command-line Calculator for tcsh/bash/zsh - http://home3.inet.tele.dk/frda/src/calc_tip.html
Guide on how to create a simple command-line calculator for the tcsh, bash and zsh shells.

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