Free operating system software for linux

SmoothWall Express is an open source firewall distribution based on the GNU/Linux operating system.
Linux is the ideal choice for security systems; it is well proven, secure, highly configurable and freely available as open source code.
SmoothWall includes a hardened subset of the GNU/Linux operating system, so you dont have to install any separate OS.
Designed for ease of use, SmoothWall is configured via a web-based GUI, and requires absolutely no knowledge of Linux to install or use.

Abruzzo GNU/Linux 0.2.3 / 0.9.0 Beta provides you with a powerful and very easy-to-use, secure operating system which is aimed at entire High Schools, not just the students. This will be an excellent choice for everyone!

CorneliOS a web based virtual operating system running on top of a host system (any BSD/UNIX system should fit) and offering services via HTML and/or XHTML over the web, which means that you can use it within any web browser without having to install any software on your local computer. The project can by used via a public Internet webserver or within your Intranet/LAN on a dedicated server (for higher security and/or better performance).
The primary targets of the project are:
- offer a secure environment that supports multiple users, large amounts of data and timesharing
- offer a user interface that a) looks familiar and is easy to handle and learn and b) introduces some new concepts at the same time
- act as a software integration system (especially for web applications)
- allow users and developers to create their own applications and to share them
- offer the technology using a dual license model (GNU General Public License as well as a proprietary license)
The API shall offer both proven concepts found in systems like MULTICS, UNIX or PLAN9 as well as some really new concepts which will be detailed in the near future. The theoretical design of the system begun back in 2003, actual prototype development started in early 2006.
Enhancements:
- This release offers multiple application interface enhancements, updated readme and documentation files, Web installer bugfixes, and a system installer that has been prepared for online updates.

Koch-Suite is a PHP-based recipe management system for Unix-like operating systems. It uses MySQL or PostgreSQL as database backends. The project is licensed under a BSD-style (three-clause) license and therefore it is Open Source.
Tested and supported are currently the operating systems Linux, OpenBSD and FreeBSD. The Koch-Suite should run on other operating systems, too, it just isnt tested so far.
Enhancements:
Webinterface:
- A pastebox for easy recipe import
- tagging of recipes for merged operations (printing, export, deleting ...) in one round.
- Editing of categories (delete, merge,...)
- Rating system
- Plenty beautifications (Themes!).
- New export format: REZKONV
- Countless bugs have been fixed.

eyeOS is a free, cross-platform Personal Content Manager System based upon the style of a Desktop Operating System.

The base package includes the whole Operating System structure and ten apps, as a Calendar, a File Manager, a Text Editor, an Internal Messenger, a Browser and a Calculator.

eyeOSs is thought to provide a complete, scalable and free (GPL Licensed) Organization and Work System.

Easy and powerful Free CMS - eyeOS. eyeOS is scalable, so everyone can port an existing PHP app to eyeOS and create a meta-package for installing it.

KIWI Image System provides a complete operating system image solution for Linux supported hardware platforms as well as for virtualisation systems like Xen Qemu or VMware. The KIWI architecture was designed as a two level system. The first stage, based on a valid software package source, creates a so called physical extend according to the provided image description. The second stage creates from a required physical extend an operating system image. The result of the second stage is called a logical extend or short an image.
A normal installation process is starting from a given installation source and installs single pieces of software until the system is complete. During this process there may be manual user intervention required. However an operating system image represents an already completed installation encapsulated as a file and optionally includes the configuration for a specific task. Such an operating system starts working as soon as the image has been brought to a system storage device no matter if this is a volatile or non volatile storage. The process of creating an image takes place without user interaction.
This means all requirements of the encapsulated system has to be fulfilled before the image is created. According to this the so called image description tree stores all the information needed to create an image.
Main features:
- Distribution independent
- Support for virtualisation systems like Xen
- Support for deploying images over the network
- Support for VMware / Qemu images
- Support for USB-Stick systems
- Support for LiveCD/DVD systems
- Centralized image description based on XML
- Prebuild boot images for SUSE systems
- Prebuild PXE configuration usable with kiwi netboot images
- SUSE Linux on a 128MB flash card.. yes thats possible