Keep Calm and Read the Friendly Manual :-)
Description:
openEuler is an open source platform developed and operated by OpenAtom Foundation. Its unified and open OS supports multiple processor architectures, helping promote a more robust software and hardware ecosystem through joint efforts of the community.
Description:
ExectOS aims to be a stable and flexible, general purpose operating system written from scratch. It is designed to be modular, maintainable and compatible with existing software. It implements a brand new XT architecture and features own native application interface. On the backend, it contains a powerful driver model between device drivers and the kernel, that enables kernel level components to be upgraded without a need to recompile all drivers.
Description:
The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes
Description:
A desktop system for creators that focuses on simplicity, elegance, and usability.
Description:
Maestro is a lightweight Unix-like kernel written in Rust.
Description:
Hobby 32bit operatingsystem project focusing on networking on i386 architecture.
Description:
A graphical Unix-like operating system for desktop computers! SerenityOS is a love letter to ’90s user interfaces with a custom Unix-like core. It flatters with sincerity by stealing beautiful ideas from various other systems. Roughly speaking, the goal is a marriage between the aesthetic of late-1990s productivity software and the power-user accessibility of late-2000s *nix.
Description:
Visopsys (VISual OPerating SYStem) is an alternative operating system for PC-compatible computers written from scratch and developed primarily by a single hobbyist programmer since 1997. Visopsys is free software and the source code is available under the terms of the GNU General Public License. The libraries and header files are licensed under the terms of the GNU Lesser General Public License.
Description:
ToaruOS is a “complete” operating system for x86-64 PCs and experimental support for ARMv8. While many independent, hobby, and research OSes aim to experiment with new designs, ToaruOS is intended as an educational resource, providing a representative microcosm of functionality found in major desktop operating systems. The OS includes a kernel, bootloader, dynamic shared object linker, C standard library, its own composited windowing system, a dynamic bytecode-compiled programming language, advanced code editor, and dozens of other utilities and example applications.