OSI-Approved Open Source (437)
- GNU General Public License version 2.0 (237)
- BSD License (63)
- GNU Library or Lesser General Public License version 2.0 (56)
- GNU General Public License version 3.0 (42)
- MIT License (23)
- Academic Free License (14)
- Apache License V2.0 (12)
- PHP License (12)
- Python Software Foundation License (11)
- NASA Open Source Agreement (9)
- GNU Library or Lesser General Public License version 3.0 (8)
- Common Development and Distribution License (7)
- Apache Software License (6)
- Artistic License (6)
- Common Public License 1.0 (6)
- Public Domain (23)
- Other License (22)
- Grouping and Descriptive Categories (489)
- Linux (462)
- Windows (427)
- Mac (422)
- Android (388)
- Modern (54)
- Other Operating Systems (42)
- BSD (39)
- Audio & Video
- Business & Enterprise
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- Science & Engineering
- Security & Utilities
- System Administration
- OS: Project is an Operating System Kernel ×
An Instructional Operating System for the x86 Architecture1 weekly downloads
An OS Kernel, with native support of network applications.
Nevux is an object-orientated non-preemptive operating system for micro-controllers written in C++. It is separated in portable and device specific code.
Exploring the possibilities of doing an Operating System completely different than all of the existing ones. Instead of basing it upon concepts that are 40 years old, design it from the ground up object oriented, peer-to-peer, and for security.1 weekly downloads
NotOS is multitasking, multithreading simple operating system based on monolithic kernel. NotOS haves paging-based memory management and software-based task switching. It works on Intel Pentium processor and others, based on Pentium.
A new simple operating system1 weekly downloads
Nucleus is an Operating system Kernel that is totally different from Linux and Windows. It is easy to understand and implement. It will have native support, small architecture and full VGA support (no text mode).4 weekly downloads
Nx is a simple (yet only x86) multiprocess operating system kernel written in C (and some parts in assembly) from scratch. Our goal is to achieve high performance, speed, flexibility and security by using the simpliest possible design.
Overnet Millennium Server for Unix Linux1 weekly downloads
ORCOS is an Organic Reconfigurable Operating System which is designed for embedded systems. ORCOS could be seen as an operating system construction kit and was written with realtime, configurability, portability and security in mind.
Its a tiny open source Operating System created mainly aid in study of Operating Systems. It's floppy based, uses FAT-12 filesystem with complete shell and basic commands. It created in C and assembly (gcc + nasm).3 weekly downloads
Operating System Framework for a MIPS Simulator. The project includes a multi-threaded MIPS Simulator and a naive Operating System and an Assembler for the simulated architecture, intended to be used for instructional and educational purpose.1 weekly downloads
Operating System in 512bytes.1 weekly downloads
Wspólny projekt społeczności OSDev.pl
A Micro Kernel OS designed from scratch2 weekly downloads
Occam aims to be an extensible, distributed, object-oriented, and secure operating system. It is currently in the planning stages.
An open hardware and software platform, Octobits attempts to recreate the aesthetics of the early eight-bit computer age using cheap, powerful, and readily available modern components.
This project is a effort to develop open source software for all old platforms, like MSX, Commodore, AMIGA, Atari, ..... and collect technical information about old platforms, keeping the "old skool" flame alive.1 weekly downloads
OnyxOS is a 32 bit protected mode operating written primarily in C with a small amount of ASM. It aims to be a small OS useful for learning low-level OS development and provides a base for other hobby OSes to grow from. It features a shell called Slosh.
Open Hypervisor features hardware passthrough, security and a framework that allows the development of Virtual Software Appliances.
Open Source NetWare Kernel (MANOS) written by the Timpanogas Research Group in Orem Utah and released under the GNU Public License in 2000 and 2001. Written by Jeff Merkey and Darren Major, original authors of the SMP Novell NetWare kernel.1 weekly downloads
OSNOS (Open Source Network Operating System) is an operating system desigend to meet the needs of small to medium networks. It will support server based applications, and will handle routing of packets through the network, and support multi-user logins.7 weekly downloads
This project is derived from the the defunct OpenDarwin project, updated with current sources from Apple where possible, and intended primarily to facilitate easy development of the OS X port of D/ELTA.
The main goal of this project is to provide open source alternative to proprietary operating system used in Motorola p2k mobile phones(not smartphones).
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.2 weekly downloads