FreeDOS is a free DOS-compatible operating system.
FreeDOS is a complete, free, DOS-compatible operating system that you can use to play classic DOS games, run legacy business software, or develop embedded systems. Any program that works on MS-DOS should also run on FreeDOS. It doesn’t cost anything to download and use FreeDOS. You can also share FreeDOS for others to enjoy! And you can view and edit our source code, because all FreeDOS programs are distributed under the GNU General Public License or a similar open source software license.
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.
Public Domain Operating System (currently x86 and 80386 and S/370 and S/390)
32 bit low level Operating System
This site will be a gift to MenuetOS, a 32 bit assembly coded operating system from Finland, Russia and Hungary.
DOS-C Kernel is an MS-DOS compatible kernel and the original FreeDOS kernel.
Real-time, modular, microkernel-based operating system under development for i386. The first goal is to support 32-bit DOS protected mode applications made with DJGPP as well as native applications.
Fusion OS is a Open Source Operating System, mainly licensed under the MPL 1.1. Parts of it are licensed upder the GNU GPL or other open source licenses. Fusion OS is based on the ReactOS project, and we contribute any bugs found in ReactOS back to them
This is GIMI, the Graphical Interfaced Multitasking Interpreter. One of the few GUIs made in QuickBASIC featuring multitasking. This one has its own script language for making programs, damm fast SVGA modes, lots of programs, and more!
The Vortex project consists of 2 things. The Vortex OS and VParse. The OS is multitasking and handles a lot of features. VParse is a stand alone Vertex2 parser. Vertex is vortex's scripting language. Pre 0.7 is QBasic and 0.7 is C++.
DynamOS is a dynamic real-time operating system that can handle different quality of service levels.
FreeOS/1 is a Free, Open Source, FreeDOS based Free and Open Source Alternative OS, with open source Microsoft Windows compatibility using HXDOSExtender KernelEx,and ReactOS source code. FreeOS/1 will include new technologies and will be easy to use
A distribution of FreeDOS which strives for Ease-Of-Use and Stability, aiming to offer a regular release schedule, utilizing the wide range of DOS-APPS available.
RMF-DOS is a project to create a compact, 8086-compatible, free clone of MS-DOS.
Tesoro is an open source operating system project fully written in x86 Assembler language. The architecture is partially based on some QNX ideas and some fresh ideas. It combines low level assembler coding (e.g. microkernel with extremely fast task switch
Computer Manager is the first OS that takes advantage of the DOS and Linux filesystems. It also makes doing jobs easier for everyone. Once it is complete, it will be made available to everyone!
Hobby DOS is a Disk Operating System compatible with MS-DOS (and FreeDOS) wrote in assembly language and you can run programs and scripts for MS-DOS.
JonOS is an open source 16 bit operating system written 100% in assembly.
It is not your typical Linux Loader. It wont boot you out of Windows or Dos, just so you can log on to Linux. Instead it will read the Linux Images (VMLinuz, ZImage, BZImage, initrd, linuxsys,img etc...) and it will display your Linux box in a Virtual Win
Micro-80 aims to simulate a Z80 homebrew computer down to the bare metal: 64K RAM, ADM-3A terminal, parallel port, serial port and...3.5" 1.44MB floppy drive?!
An operating system kernel designed with simplicity, readability, and elegance in mind. No longer written from scratch, but built on "the shoulder of giants." Specifics are given in the CREDITS file starting from v0.04
Pascal Operating System, That will translate Freedos to Pascal --OSPine written in Turbo Pascal and NASM. I think now I will make all that useful before I release. Thank for Feedback (^_^)
Aim is to be a DOS operating system clone written in PASCAL and compiled using either Borland Turbo Pascal 5.5 and / or Microsoft Quick Pascal 1.00 and /or Free Pascal
Perix is a MS-DOS compatible program, capable of running without an underlining OS. It is written in Turbo Pascal and Assembly. All parts of system are distributed under terms of the GNU General Public License v2.
Reenix is a combination of the best of both worlds: DOS and *x. Based on the GNU toolkit and FreeDOS, Reenix is a stepping-stone between the two OSes and a subset of *x which will run on an 8088.
RxDOS is a fast MS-DOS clone that supports very large disk drives, FAT32 volumes, and Windows 95/98 Long Filenames