Open Source C Business Software for MS-DOS

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.

A small and easy to use framebuffer graphics library

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.

Here is a c_version of Thomas Bleeker's pnglib 1.0, a free graphy library. His site is https://www.madwizard.org/programming/projects/pnglib Thomas's original code is x86-asm. She(the code) can read and display PNG images in programs, and link without Zlib. With the author's permission, Leisure bamboo translate her to c. So she can be compile by turbo c 2.0, borland c 4.5, visual c 6.0, keil c51 7.5, or others. Some(not all) plainform where she can run, as below: 1)dosbox, see about her in sample.tc2. dpmi.bc4; 2)window, see about her in sample.bc4, dpmi.bc4, sample.vc6; 3)c51's uv2 simulator, see about her in sample.uv2; 4)arm singlechip, that is cino f780 barcode scanner. She can decompress apng(Animated PNG) now, There are some demo file 01.png, 04.png ... 32.png in root folder. She is small(12k for vc6, 32bit code; 21k for bc4, 32bit code; 27k for tc2, 16bit code) and beautiful.

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.

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!

Hebcal, a perpetual Jewish Calendar, has moved to GitHub

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.

RAPID Graphing Software for Technical Analysis of Stocks and Commodities

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.