Ultimate Scientific Calculator (USC) is a program to perform calculations with extreme precision on both extremely large or small numbers, and provide too many built-in and user-defined functions and formulas.
The moepbot is an IRC-Bot written in PHP, so it is platform-independent. It offers many (often rare in IRC) features, like a calculator, an auto-greeter, many fun-functions, etc.etc.
KAlgebra is a MathML-based graphic calculator, thought to bring to the user its power by solving expressions written in MathML or calculating converted common equations to MathML. This project now belongs to KDE Edu. http://edu.kde.org
GPS-aided car kinematics calculator. Computes forward and lateral accelerations of the vehicle, time to reach some speed and some distance. It will work on PocketPC.
ShadowFox is an all-in-one browser, including a browser (DUH!), a simple bar graphing system, a calculator, and much more! It is intended to replace many of the simple Windows(C) applications you use everyday, such as IE, NotePad, Paint, Calc, etc.
cl-calc aims to be a simple command line calculator. It can handle precedence unlike a lot of graphical calculators. cl-calc is written in Python and requires PLY (Python-Lex-Yacc).
Little program that calculates maintenance, surplus, and defecit caloric levels using three methods, quick based on weight, katch based on bodyfat, harris, based on age, weight, and height..
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.
A web browser based calculator written in HTML and JavaScript that will calculate the Variable Length Subnet Masking for your network. Simply enter your CIDR block address/mask and the number of addresses you need in each network, and it does the rest.
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JCalc is a large Calculator written in Java. It support the standard basic opations (+,-,*,/) and the scientific calculator (sin, cos, tan, sqrt, ...). Calculate and translate with the different numbering systems. And it can solve simple equations.
The Grade Point Average Calculator is a web-based script that will calculate a grade point average based on the American system. Currently including calculation options for high school; middle shool and college versions are in development.
A 3d/2d Graphing Calculator with multiple tools, written in C# for Microsoft Windows. DirectX9.0c with Mananged Extentions and the .Net 2.0 Framework are required to run this program. It uses the freely availible Lundin Math Parser, www.lundin.info.
Holdem Tools is a web based Texas Holdem odds calculator. The front end is generated using PHP and JavaScript and makes use of the scriptaculous library. The backend is powered by the poker-eval library, which is written in C.
CryptoHawk can calculate hashes (md2,md4,md5,sha-1,sha-256 and hmac). It can also perform cryptanalysis like frequency analysis for substutition cipher and exhaustive key search for rotation cipher, as well as searching internet databases for md5 hashes.
Modeline calculator designed to calculate low resolution modelines for CGA, EGA, and VGA arcade monitors, NTSC and PAL televisions, and multisync PC monitors. Supports X11, fb, and AdvanceMAME modeline formats.
The project intends to develop an advanced scientific calculator which will be based on the GMP library. The calculator will have a GUI based on wxWidgets.
GeltCalc is a simple Financial Calculator with functions for Time Value of Money calculations. It is a Cocoa app written in Objective C for the Mac OS X.
HorsePower is J2ME scientific calculator optimised for use on mobile phones, with the appearance of the classic range of Hewlett Packard calculators. (MIDP 1.0 & CLDC 1.0)