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Open-source, free, multi-platform BASIC compiler, with syntax similar MS-QuickBASIC (including the GFX statements), that adds new features such as pointers, unsigned data types, inline assembly, a pre-processor and many others.
John's Mutant contains several projects. The current project is an ECMA-55 Minimal BASIC compiler for Linux systems using AMD64 compatible CPUs. You can download the MinimalBASIC compiler source in the Files section.
C/C++ compilers and tools to compile and build for targets
DOS 16/32-bit, RDOS, Windows 16/32-bit, OS/2 16/32 bit, Linux 32-bit (x86), Netware
running on host OS
DOS, Windows 16/32/64-bit, OS/2, Linux 32/64-bit (x86/x64)
Open Watcom is now completely moved to GitHub
Open Watcom 2.0
https://github.com/open-watcom/open-watcom-v2#open-watcom-v2-fork
Open Watcom 1.9
https://github.com/open-watcom/open-watcom-1.9
Fast and efficient self-assembling 80x86 assembler for DOS/Win32/Linux; with 8086-80486/Pentium/MMX/SSE/AVX/XOP instructions support, 16-bit/32-bit/64-bit code, binary/MZ/PE/COFF/ELF output formats.
David Ashley's C compiler has now been GPL'd. This includes the full source, some demo programs, along with some minor changes...
ACC builds 32bit exe's using TRAN's PMODE dos extender for MS-DOS.
Basic language between high level assembler und small C. The Compiler outputs x86 assembler code. No use of extern library an nearly independent from the operating system. The compiler is only some KByte in size.
XODO
Um compilador para uma linguagem estilo portugol com propósitos puramente acadêmicos, ou seja, para que qualquer interessado possa estudar seu código, alterar, aprimorar, etc.
Sintam-se livres para usar o software como entederem.
O autor não se responsabiliza por qualquer dano causado pelo software.
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DOS/32 Advanced DOS Extender is a drop-in replacement for the DOS/4GW DOS Extender and compatibles. Being fast, small and flexible DOS/32A can be used in many environments, from embedded systems to DOS emulators, by both developers and end users alike.
This is PopAsm, the popular assembler project. It is intended to
support the syntaxes of the most used assemblers so existing
code has no need to be rewritten. It also assembles instructions
of all intel-compatible CPUs.
The Bas2Lee Compiler is a BASIC langauge that is compiled to LeeOS kernel 0.0.2 binary form.
It's purpose is to speed up and make simple the development of the LeeOS project and any other projects that are to be developed in the future for LeeOS.
A full development kit, based on XSCompiler. Multi-platform compiler and IDE, many libraries and examples. Uses an innovative programming language, an improved version of the standard and well-known C/C++.
Moved to GitHub: github.com/developer-resources-co/drdevtools
# ⚠ This project has moved to GitHub
**drdevtools is now maintained on GitHub:**
**[github.com/developer-resources-co/drdevtools](https://github.com/developer-resources-co/drdevtools)**
The complete CVS history was migrated to git on 2026-06-10. This SourceForge
project is retained only as a read-only archive — all current development happens
on GitHub. Please update your bookmarks and clone from the GitHub URL above.
Steini\\\'s Mini Compiler is a fast DOS 16 bit compiler. Please help to improve the programming language writing new commands. The compiler uses a set of assembly files for the compilation process.
NATIVE is a project aimed at producing a version of the C# language compiler which omits native-code for various OS platforms. NATIVE does not target the CLI or use the CLR.