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Syscalc
Line-based scientific calculator.
http://www.ad-pacific.com.au/syscalc.html

Scientific Calculator
Javascript calculator with basic scientific functions.
http://www.ScientificCalculator.com/

Beautiful Calculator
Replacement for the standard Windows calculator with many additional features.
http://www.rayslab.com/calculator/

iFigure
Guide to online calculators, including those designed for home, travel, finance, health, and small business.
http://www.ifigure.com/

Maximath
Graphing calculator. Includes matrix editor and unit conversions.
http://www.linesofcomm.demon.co.uk/

URL-Calculator
Web application that evaluates arithmetic expressions embedded in a URL.
http://x42.com/help_urlcalc/

UnitMath
Simplifies calculations involving numbers, units, and precision.
http://unitmath.com/

Showcalc
Calculator with scrolling tape display.
http://www.showcalc.com/

Fuzzycrawler Scientific Calculator
Javascript-based online calculator.
http://www.fuzzycrawler.com/new/tools/index.phtml?SCREEN=Calculator

Scientific Calculator
Javascript scientific calculator using RPN.
http://mypage.bluewin.ch/a-z/cusipage/scicalc.html

Wise Calculator Homepage
Scientific and engineering calculator for Windows.
http://www.chat.ru/~pmikh/

Wahoo Software
Financial desktop calculator.
http://www.xmlcreate.com/

Quadratic Equation Calculator
Calculator for solving a general quadratic equation.
http://www.1728.com/quadratc.htm

SeeThru Calculator
Transparent desktop calculator with conversions, fractions, calendar, and sales tax.
http://www.seethrusoftware.com/

Multi-Function Calculator
Multi-function shareware calculator, and unit conversion utility for Windows. Four modes of operation: statistics, trigonomety, base-n, and unit conversion.
http://www.rjsoftware.com/FNA/

Date Calculator
Perform date math, calculate date differences, and organize data and events.
http://www.datecalculator.com/

Monachos Calculators
Online calculators with variety of engineering functions, including unit conversion, periodic table, piping applications, and electrical applications.
http://www.monachos.gr/eng/calculators/calculators.htm

College Financial Calculator
Online financial calculator that determines NPV, IRR, MIRR, PV, FV and amortization schedules.
http://i98davsc.island.liu.se/

Akapa Math Calculator
Free software calculator with scrolling tape, financial mode, fractional number (e.g. 1 3/4), and other advanced features.
http://www.akapa.com/calculator.html

Volume of Partially Full Cylinders, Spheres and Cones
Java applet for partially full cylinder (on side), sphere, and cone.
http://www.LMNOeng.com/Volume/CylConeSphere.htm

BAC Computer Software
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.
http://www.bacsoftware.co.uk/fcalc1/

PG Calculator Web Page
PG Calculator is a full scientific calculator with up to 80 build-in functions. Installation package includes PG Calculator executable file, help file in English, skin editor and 7 additional skins. Skins also are available to download at PG Calculator Web Site.
http://www.pgcalc.x4.pl/eng/

MegPegCalc Equation Calculator
Write complex equations, assign results to variables, execute multiple equations using script files, and simulate fixed word length effects.
http://www.megpeg.webcentral.com.au/megpegcalc/

High Precision JavaScript Calculator
A JavaScript Calculator that adds, subtracts and multiplies fairly large numbers. Functions are added in my copious free time.
http://www.petting-zoo.org/Calculator.html

Analysis, a Tool Dedicated to Calculus
Analysis is a tool that can draw 2D and 3D graphs of functions with different characteristics. Implicit f(x,y)=g(x,y)form curves are plot in a xy plane. Free download for all Windows versions
http://www.geocities.com/leibowitz.geo/analysis_en.html

AddsUp
AddsUp the new way to calculate.
http://www.addsup.net

Basic Math and Geometry Calculators
Javascript general-purpose calculator and some special-purpose applications.
http://www.geocities.com/Vienna/Strasse/7722/math.html

Jason's Calculator
The homepage for an easy to use multipurpose shareware calculator.
http://calculator.8m.net/

RPN Calculator
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.
http://www.computersciencelab.com/RPNCalc.htm

Linear Algebra Calculator
mcalcdos is a free command line linear algebra calculator capable of matrix, vector and polynomial operations in real and complex fields.
http://www.angelfire.com/space/matrixcalc/

5000 digit calculator
A calculator that takes calculations out to many, many digits
http://www.home52365.fsnet.co.uk/bcalc.htm

SlideRule
Scientific calculator for Macintosh. Free to download.
http://www.quad.pwp.blueyonder.co.uk/sliderule.htm

Calculator.NET
A freeware awarded scientific RPN calculator for Windows with many functions and customizable user interface
http://www.speech.kth.se/calculator

Lygea Pocket 15C Scientific Calculator for Pocket PC
HP-15C scientific emulator for Pocket PC.
http://www.lygea.com/pocket15cdetail.htm

X-Bc - a GUI to bc
X-Bc is desktop calculator that provides lots of functionality for scientific working. Input and output stay visble at all time for correction and comparation. It's a frontend to bc.
http://x-bc.sourceforge.net

WebCalc
Collection of free web based calculators for many subject areas.
http://www.webcalc.net

sCal and sCal2
Small, open source (free), scientific and engineering, JavaScript-programmable calculators.
http://scal-2.sourceforge.net

GoldfishSoft
Free software for the Macintosh. FrakKalk, the newest GoldfishSoft Program, is a fraction calculator for Mac OS X.
http://homepage.mac.com/goldfish1/

Big Integer Numbers Calculator
Free download big integer numbers calculator.
http://www.bigcalc.scriptmania.com/

Jason's Calculator
Open source calculator application for the Windows platform.
http://sourceforge.net/projects/calculator123/

Calculator Express Math Formulas
Includes arithmetic, mortgage and currency exchange processing features. Uses a dialog box and icons for input.
http://www.calcexpress.com/

Programmable Mathematics Freeware
Calculator and numeric system supporting permanent installation of user defined functions and libraries.
http://members.aol.com/rf21exe/

Scientfic Calculator
Includes arithmetic, square root, exponent, natural log, trigonometry functions. Also, has parenthesis and memory features.
http://members.tripod.com/~rwedge/calculator.html

PALM OS Calculator
The calculator is being provided in several versions, depending on the tasks to solve.
http://www.c4calc.com

VPCalc
Variable-precision floating decimal calculator programmes by Harry Smith.
http://pw1.netcom.com/~hjsmith/Calc.html

Advanced Converter
Program for conversion between units of measurements.
http://www.mathterra.com/

Fung-Calc - Graphing Calculator
2D and 3D graphing calculator for Linux with multiple graphing modes.
http://fung-calc.sourceforge.net

GCalc
An online graphing calculator Java applet.
http://humblestar.net/GCalc

ScriptConsole
Mathematical calculations using scripts and commands in a console-based multiple-window interface using the Microsoft VBScript engine. Windows; shareware.
http://www.flashpeak.com/scriptcon

DreamCalc Pro
Photo-realistic scientific and financial calculator for Windows. Free trial download.
http://www.dreamcalc.net/

A3Calc
Calculator program for the Nokia 9210/9210i/9290 Communicator: also PC/Windows. EPOC version for sale by post, Windows version is postcardware.
http://personal.inet.fi/business/vstt/index_eng.htm

Pocket 16C Calculator
HP-16C emulator calculator for Pocket PC, by Pirrama Development. Free trial download.
http://www.pirrama.com/

Pocket Calculator
Online calculator, written in Java. Includes Square root button and number memory. Source code can be downloaded.
http://www.df.lth.se/~mikaelb/pocketcalc-enu.shtml

Haxial Calculator
High precision calculator with unit and radix converters.
http://www.haxial.com/products/calculator/

gNumerator
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.
http://numerator.sourceforge.net

Calculator Directory
Extensive variety of software calculators collected in one directory. Scientific, graphing, loan and mortgage, currency and conversion calculators.
http://www.pc-calculators.com

HiDigit
Powerful calculator for students and teachers. Five number systems, full complex numbers support, and 15-digit maximum precision.
http://www.binarythings.com/hidigit/

Online Matrix Calculator
Calculates matrix determinant and inverse. Performs LU, Cholesky, QR, SVD decompositions. Calculates eigenvalues and eigenvectors.
http://www.bluebit.gr/matrix-calculator

Syntan is a sophisticated calculator of math functions for Windows.
A flexible calculator of math functions based on syntax analysis with living graph. Free download.
http://www.syntan.net/

Easy Date Converter
Conversion program that gives the day of the week for a given date.
http://www.hermetic.ch/cal_sw/calconv/calconv.htm

PAPCW
Programmable arbitrary precision RPN calculator. Zip file, download will start immediately.
http://public.planetmirror.com/pub/cug/vol_400/468_01.zip

Speakeasy
A user-oriented software package that allows non-programmers the opportunity to explore the computational power of their computer. Free trial download.
http://www.speakeasy.com/

ESBCalc Pro Home Page
Scientific calculator with many features including Paper Trail. Windows32. Free trial download.
http://www.esbconsult.com/esbcalc/esbcalcpro.html

CalcBoard
Calculates expessions using unit conversion and interval arithmetic. Supports numeric values with units and calculations using units, values with errors and interval arithmetics. Windows32. Free trial download.
http://www.tiksiland.com/~cb

Command-line Calculator for tcsh/bash/zsh
Guide on how to create a simple command-line calculator for the tcsh, bash and zsh shells.
http://home3.inet.tele.dk/frda/src/calc_tip.html

Scientific and Currency Calculator
Fully functional expression calculator. Linux/Windows versions. Free trial download.
http://shareit1.element5.com/programs.html?productid=186383

Syberad
A full-function scientific calculator for Windows. Trial download.
http://fp.syberad.plus.com/calculator/calculator.htm

PG Calculator
A scientific calculator with full customizable user interface. Aalgebraic and RPN mode. Windows; shareware trial version.
http://www.pgcalc.net/

DateCalculator
DateCalculator v3.1.0 by Joesoft
http://www.joesoft.net/

Scientific Calculator
Java applet online calculator.
http://www.mathpad.com/public/htmls/main/left/calc/CalcInfo.html

Calculator.org
Calculator resources including free download of scientific engineering, statistical, and financial calculators.
http://www.calculator.org/

Sicyon
Online graphing calculator.
http://www.sicyon.com/

Math Expression Calculator
Evaluates mathematical expressions involving multiple variables.
http://www.softnik.com/products/mathex/

My Ten Key
A realistic ten key calculator designed by a CPA.
http://www.mytenkey.com/

Matrix Calculator
Calculator for basic matrix operations. A demo version download is available.
http://members.shaw.ca/mtx/matrix.htm

Printing Calculator by Auroa Binary Systems
Desktop printing calculator. Prints in columns and color on standard-sized paper.
http://www.angelfire.com/biz/ccsprog/Calculators.htm

Matrix Calculator
Online Java calculator for matrix operations.
http://www.ifrance.com/mathematics/index_gb.htm

Constructive Reals Calculator
An RPN calculator applet and supporting Java library.
http://www.hpl.hp.com/personal/Hans_Boehm/crcalc/CRCalc.html

1st Calculator
Scientific calculator.
http://www.romanlab.com/1stcalc/

WIRIS
JAVA applet that allows mathematical online calculations.
http://calculadora.edu365.com/

MathServ Calculus ToolKit
Online calculators for several calculus functions.
http://math.vanderbilt.edu/~pscrooke/toolkit.shtml

Calculators by Ken
Reference programs written in VB3. Includes common mathematical formulas.
http://www3.sympatico.ca/prentice

Kalculator for KDE 1.0
Evaluates mathematical expressions. Includes history feature, function-pick window, and help. Variables and hex numbers are also supported.
http://www.mujweb.cz/www/mirza



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