A modern x86_64 hobbyist operating system built from the ground up.
BoredOS is a functional x86_64 operating system featuring a custom Desktop Environment (DE), a dedicated Window Manager (BoredWM), and a FAT32 filesystem. It balances low-level kernel exploration with a surprisingly capable userspace.
Note
The screenshot above may represent a previous build and is subject to change as the UI evolves.
- 64-bit Long Mode: Fully utilizing the x86_64 architecture.
- Symmetric Multi-Processing (SMP): Full support for multi-core CPUs via Limine SMP.
- LAPIC & IPI Scheduling: Advanced interrupt handling and inter-processor communication for task distribution.
- SMP-Safe Spinlocks: Robust kernel-wide synchronization for VFS, process management, and the GUI.
- Multiboot2 Compliant: Bootable on real hardware and modern emulators.
- Kernel Core: Interrupt Descriptor Table (IDT) management and a robust syscall interface.
- Filesystem: Full FAT32 support for persistent and in-memory storage.
- Networking: Includes the lwIP networking stack.
- BoredWM: A custom Window Manager with drag-and-drop, mouse-centered interaction.
- Customization: Adjustable UI to suit your aesthetic.
- Media Support: Built-in image decoding.
- Productivity: GUI Text Editor calculator, Markdown Viewer, a simple browser and BoredWord.
- Creativity: A Paint application.
- Utilities: Terminal, Task Manager, File Explorer, Clock and a (limited) C Compiler.
- Games: Minesweeper and DOOM.
Explore the internal workings of BoredOS via our comprehensive guides in the docs/ directory.
- 📖 Documentation Index – Start here.
- 🏗️ Architecture Overview – Deep dive into the kernel.
- 🔨 Building and Running – Setup your build environment.
- 🚀 AppDev SDK – Build your own apps for BoredOS.
If you find this project interesting or helpful, consider fueling the development with a coffee!
BoredOS is the successor to BrewKernel, a text-only project initiated in 2023.
While BrewKernel served as the foundational learning ground for this OS, it has been officially deprecated and archived. It no longer receives updates, bug fixes, or pull request reviews. BoredOS represents a complete architectural reboot, applying years of lessons learned to create a cleaner, more modular, and more capable 64-bit system.
Important
Please ensure all issues, discussions, and contributions are directed to this repository. Legacy BrewKernel code is preserved for historical purposes only and is not compatible with BoredOS.
Copyright (C) 2024-2026 boreddevnl
Distributed under the GNU General Public License v3. See the LICENSE file for details.
Important
This product includes software developed by Chris ("boreddevnl"). You must retain all copyright headers and include the original attribution in any redistributions or derivative works. See the NOTICE file for more details.