Open Source Calculators

PeaZip is a free archiver tool. The application provides an unified, natively portable, cross-platform file manager and archive manager GUI for many Open Source technologies like 7-Zip, FreeArc, PAQ, UPX. Create: 7Z, ARC, Brotl, BZip, GZip, PEA, TAR, WIM, XZ, ZPAQ, ZIP, Zstandard files and more Open and extract 200+ file types: ACE, CAB, DEB, ISO, RAR, ZIPX and more Features of PeaZip includes extract, create and convert multiple archives at once, create self-extracting archives (sfx), split files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hashes, export task definition as command line script.

An automated, Web based IP address management (IPAM) software. It features powerful search and filter functions for both networks and host, as well as many tools (e.g. a subnet calculator) helping Administrators to plan and handle complex IP networks

Gordian Knot started out as a simple bitrate calculator for DivX encoding but has evolved to become an integrated package or tool for the entire process of DivX/XviD encoding.

Position Sizer is a utility panel for MetaTrader 4 and MetaTrader 5 platforms that lets you easily calculate position sizes for trades based on risk tolerance, stop-loss, account size, and the current market conditions. It can be configured and customized in multiple ways: https://www.earnforex.com/metatrader-expert-advisors/Position-Sizer/

From single or scientific calculator to structured programming environment (+- pascal): Input, graphic (display of functions; direct draw; display, capture, etc. of images) functions; tests, ... Ready: visual problems or blind users. See below in the web (http://atcalc.sourceforge.net/)

CIMA is a program that provides an easy way to calculate a diversity of body indexes related to the fat content and energy needs, providing a way to control our weight: 1 - Body Mass Index (BMI), including both the traditional and the new proposed formulas, and provides a classification of the results. The evaluation takes in account the age groups (adults, children and the elderly). 2 - Body Adiposity Index (BAI). 3 - Basal Metabolic Rate (BMR) for Men and for Women. 4 - Body Fat Percentage (BFP). 5 - Total Daily Calories Needs based on the activity levels of the user lifestyle. The program supports 3 languages (English, European Portuguese and Brazilian Portuguese). IMPORTANT: CIMA works only with the International System of Units (SI). No other systems are allowed since SI is the standard one. CIMA may still require a depuration before becoming a mature program, but it is already functional and may be downloaded by anyone.

Can solve, "+,-,/,*,^" operations. Can solve complex expressions with parentheses "(,),[,],{,}". Has the possible of use previous response when enter "res". Can solve expressions with negative values, example "_2+5". Has "pi" and "e" natural constants.

With this application you will be able to calculate any number with exponent

With this application you will be free to choose what kind of root of a number or data arithmetic you want to calculate.

With this application is possible make: Sum of Matrices, Subtraction of Matrices, Multiply a Matrix by a real number and Multiplication of Matrices

Baculator is a Reverse Polish Notation (RPN) calculator program with an infinite scrollable stack and support for most common mathematical operations as well as some more esoteric operations. Available for Unix/Gtk+, Mac OS X, and MS Windows.

Small and fast software that calculates the molar mass of a chemical formula. Can redirect user to the wiki page of the compund or to the NCBI chemical database. Multilanguage.

With this application you will know, instantly the time difference between two dates in the form of date, days, hours, minutes, and seconds!

KpGen is an modern Password Generator. It has some interesting features, like a random generator based on mouse move with some strong options. It can also work as a hash calculator, calculating hashes of passwords and phrases.

Have you ever imagined not having to do math to convert the various number systems and still make arithmetic calculations with different numerical systems in the same expression? That's what makes this application. You can mix decimal, binary, octal and hexadecimal arithmetic operations using the symbols "+, -, *, /,^,". You can put "e" to use Napier's constant, put "pi" to use pi constant and put a "!" in the of numerical system form to factorization. So let's start doing the math in an instant with this application and save the rest of the time for more useful things of interest.