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An open source operating system for x86.1 weekly downloads
A fork of ReactOS which aims to be compatible to the NT architecture (but not a clone) meeting WINE's standards every time a part of NT interface is implemented. The fork was done at revision 9494 before ReactOS changed slowly into Tinykrnl.1 weekly downloads
Floppy Firewall Linux is a mini-linux distro for firewall use. It derives from Coyote Linux Firewall.
BNL OS is a free, modern operating system based on the design of Windows XP/2003.This is not a Linux based system, and shares none of the unix architecture. Please remember, this is in the development stage, and is not reccommended for everyday use.
MightyOS is a serious attempt at making a fast and lightweight Operating System written in C++.
Story OS is a small microkernel system with object-oriented service interface.
Can emulate old computer on text the code pogram ideal to create kernel for operating system The begin the project the can emulate CPU(8080)and z80.
Pearwin is a unix like operating system, written in C, C++, Assembly, and other languages. This is a hobby/home OS, designed for home use, but can be professional (if you can find an application!).