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MentOS is an educational operating system developed for academic use, particularly in university settings, to help students understand low-level system concepts such as process management, memory handling, and scheduling. Written in C, MentOS closely mimics a simplified Unix-like OS and includes hands-on implementations of key kernel features. Designed to be highly readable and modular, it offers a practical approach to learning systems programming through real-world kernel components,...

egos-2000 is a minimalist operating system built for educational and research purposes, offering a simplified kernel and runtime environment for exploring OS concepts. It runs on QEMU and is written in C/C++ with a focus on clarity and modularity. The system includes a basic filesystem, process management, and syscall interface, making it ideal for understanding core OS principles. egos-2000 is particularly well-suited for students learning about kernels, user-space interaction, and...

CodeCampus OS is a custom Linux distribution based on Ubuntu 24, designed for beginner developers, computer science students, and self-learners who want to start coding without friction. Unlike traditional setups that require hours of installation and configuration, CodeCampus provides a fully pre-configured, learning-first environment right out of the box. From the moment you boot, everything is ready—so you can focus on learning, experimenting, and building instead of...

ArrowOS is an AOSP based open source project started with the aim of keeping things simple, clean and neat, both for the Android system and users. We understand the pain of unnecessary and sometimes rarely used mods/features being shipped with custom roms nowadays which may end up causing battery drains and/or memory leaks. This is being strictly avoided on our side keeping everything to a bare minimum, delivering the stable performance all the time without destroying the AOSP interface....

U M I, pronounce "ou" "ème" "aie" to an approach of "you & I" expression, is meant to be a derivative of Ubuntu, a Linux distribution. U M I is a system that wants generalist, simple and tailored to your needs. M I perhaps as "Maths Infos", "Mission Impossible", "Micro Imagination", "Museum Incarnation", ..., "Mandela Ideologie", ...,"Magne Isapèt" :), ... ; but in reality M I for "Me Inside", inside Linux, inside Debian, inside Ubuntu. This project designates all logistics associated...

A practical guide and GitHub-hosted project by Samy Pesse that walks you through building a very simple UNIX-based operating system in C++, designed to boot, launch a userland shell, and remain extensible. It’s more than a proof of concept—it’s meant to be functional and educational. All the system source code will be stored in the src directory. Each step will contain links to the different related files. This course is open to contributions, feel free to signal errors with issues or directly correct the errors with pull-requests.

Crosos is a open-source OS. It is based on the Linux Kernel and mostly uses the same code in Ubuntu (but it has been derived from Debian)

x9wm Linux - 32/64 Debian 7.2 "Wheezy" Stable with Google-Chrome / FireFox / Gnome-Commander / FireFox / Gedit / x9wm window manager / Gnome Display Manager 3 / MetaCity / ... more Integrated distraction free interface with simple / single click / sweep drag paradigm. Easy to customize menu / 1-click to any thing Instant always available system monitor top-bar Dec 04 2013 - update 1.02 1 New Desktop Wallpaper 2 Conky Top bar updated / Bottom bar space - for menu expansion in 1.03 3 New menu feature for window (max) maximize to save reshape for full-screen windows in any screen dimension 4 Code stub preped for automation and bottom menu control bar 5 Integrated into x9wm linux version "celestial" 1.2 Debian Wheezy w/ gnome-commander integrated 6 Gnome-Commander integrated and remote filesystems and WIndows SMB / CIFS partitions integrated 7 Gnome GEDIT now default text editor 8 qcalculate replaced xcalc as a much more fully features general purpose calculator / equation

Porting Android to Intel(Marvell) ARM XScale PXA270. A complete build system for embedded Linux and Android on PXA270. It was open source for anyone but no responsibility for any damage resulting from any usage of the software. Demo : http://www.youtube.com/watch?v=3Ine1k4Hzy8 http://www.youtube.com/watch?v=3Xp5zMPOI1c http://www.youtube.com/watch?v=lYzRSNuUsIw http://www.youtube.com/watch?v=1lmmld7LjGM http://www.youtube.com/watch?v=CNGhFmCwaxw Documents...

ButterflyOS is a very simple operation system for the Atmel AVR Butterfly board. It's based on the AvrX multitasking scheduler, created by Larry Barello. A byte-code program for ButterflyOS, can be sent and managed through the serial interface.