Fiwix logo
Welcome to The Fiwix Project
Current Release:
0.7.7  (09-Jan-2015)
Working on:
- memory manager rewrite
- page cache rewrite
- Minix FS V2 full implementation
- select() and syslog()
- other kernel improvements
Other Projects:

What is Fiwix?

GNU/Fiwix 0.7.1 (video)
Fiwix is an operating system kernel based on the UNIX architecture and fully focused on being Linux 2.0 compatible. It is designed and developed mainly as a hobby OS and also for educational purposes, so the kernel code is kept as simple as possible for the benefit of students. It runs on the 32-bit x86 hardware platform, and is compatible with a good base of existing GNU applications.

The Linux kernel is currently too big for a student of computer science to be able to understand quickly its internal structure and to study how it works, and tomorrow it will be even bigger than it is today. In contrast, the Fiwix kernel, due to its minimal structure, can be the entry-level kernel and can therefore be more suitable for education. For obvious reasons, this project is only focused for students of computer science and new OS enthusiasts who might want to know more about the internal operation of a UNIX-like operating system.

Do not think of GNU/Fiwix as a new UNIX flavor with its own system utilities, libraries, compilers, etc. Think about GNU/Fiwix as a new Linux-like kernel that takes advantage of the existing GNU applications.

It is based on the monolithic kernel design and it is written entirely in C language, leaving only for the Assembler the small needed parts.

The development team is one person: me.


The project targets the following goals.


The Fiwix kernel is expected to be publicly available under an open source license when it reaches the 1.0 version (self-hosting).