Open Source MS-DOS Business Software

A famous scientific plotting package, features include 2D and 3D plotting, a huge number of output formats, interactive input or script-driven options, and a large set of scripted examples.

4tH is a Forth compiler with a little difference. Instead of the standard Forth engine it features a conventional compiler. 4tH is a very small compiler that can create bytecode, C-embeddable bytecode, standalone executables, but also works fine as a scripting language. It supports about 95% of the ANS Forth CORE wordset and features conditional compilation, pipes, files, assertions, forward declarations, enumerations, structures, suspended execution, recursion, include files, etc. It comes with an RPN calculator, BASIC interpreter, line editor, preprocessor, compiler, decompiler, C-source generator, a virtual machine, and a multitasking environment.

Hebcal, a perpetual Jewish Calendar, has moved to GitHub

Scheduling program for travel agencies and tour operators, for flights, hotels, carrentals and with flexibility to change / add / remove later.

rcal is an interactive calculator for DOS, that loosely mimics the behavior of "roller printing" calculators. It supports huge numbers, floating point and has extremely low hardware requirements.

Calculator++ is an Open source Scientific Calculator app designed to replace the standard Calculator app. Currently in MS-DOS Format.

Several msdos applications to be used on emulators.

kalc is a programmable scientific calculator, using RPN (Reverse Polish Notation). Its behaviour imitates a HP48/HP49 calculator. Works with real and complex numbers, unlimited size integers, arbitrary-precision real numbers and more.

FoxCalc is a calculator with a text user interface (TUI), compiled for DOS. It supports a mouse, and uses the GMP library, therefore its results are highly accurate. FoxCalc is distributed as a zip FreeDOS package. That way, it can be easily installed using the FreeDOS package manager.

CL - Matrix - GUI: The main purpose of the project addressing to the command line prompt riders.. This will be wokring mainly as a library for C++, allowing programmers to use pseudo grafics in their applications. CL - Matrix - Enviroment: A real envi

ConjuGNU is a GNU verb conjugation program. It will soon become a fully fledged grammar checker, hopefully to be integrated in OOo. Currently only for Spanish, it will include English, French, Italian, Portuguese and others, most likely in that order.

The Doc2Html command line operating program strippes the Word produced html files (by opening the documet, saving as html) leaving pure text + minimum html code. It also has a mode to convert data berween different charsets: DOS, Windows-1250 and ISO-8859

Equalculator is an equation calculator. It is currently in the "pre-alpha" stage of development, so don't expect it to do miracles. You type in your equation, it will ask you for the variables and Voila!, it gives you the answer.

Do you still have PFS:First Choice database files? First Choice was a great DOS-base flat file database program. The program, first2html, reads the file and converts it to HTML, as a TABLE. You can put your First Choice database into a web page!

FreeDOS Reisdent Calculator -- programmer's TSR calculator.

Hyperzelo is specially designed software which is used in computer web applications combining projects with frameworks especially in Github synonym application. This application aims to facilite the reception of data quickly and allow the data of this application to be used on the stable web in the reception of any device that uses it

KICK (Kasseler Investment Club Kalkulation) is a bundle of PERL scripts to manage the finances of an investment club (german documentation).

Small tools for diverse usage. Targeted for the win32-console or as 'small' GUI's (win32)

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.

Millennium OS is a GUI for both MS-DOS and FreeDOS PCs. Written in QBasic & DJGPP, it is 16-bit, but it has a nice desktop for old & new processors. Check out: http://www.datacomponents.us.tt/ FOR MORE INFO.

MSGraph is a program designed for the interactive, fast, qualitative analysis of mass spectrometric (MS) data. It is a tool to provide fast and simple access to all the information contained in an LC/MS analysis run.

Mundo-Bioq permit to collect patient data, analysis data, and accounting of laboratory data. It's focused to small laboratories that speak spanish. It's developed in FoxPro/DOS and run in in DOS, but also can run in Linux (under DOSEMU), and any Win

Office System is a free open source software for use on your office! it can: Play videos! Watch images Make notes! Watch calendar And much more!

Pc Calculator is a clever note and formula editor combined with an advanced and strong scientific calculator. Being an editor it is extremely user-friendly allowing all possible typing and other errors to be easily corrected and fast recalculated.

RAPID Graphing Software for Technical Analysis of Stocks and Commodities