#operating-system

LiberSystem is an operating system built as a capability-based microkernel written in the Rust programming language, focusing on security and safety through the use of capabilities for access control and Rust's memory safety guarantees.

The author explains their decision to switch from Linux to FreeBSD, detailing the differences in system administration, package management, and overall philosophy. They share their initial impressions and the learning curve involved in making the transition.

BlackBear presents itself as a "Private Life Operating System," a platform designed to help users manage their personal data, finances, and digital identity with a focus on privacy and security.

The article explains that FreeBSD uses a significant portion of system RAM for ZFS's adaptive replacement cache (ARC), which caches filesystem data to improve performance. This behavior is normal and beneficial, as the ARC automatically releases memory when applications need it, and the author describes how to monitor and limit ARC usage if desired.

NanoShell is a 32-bit operating system that features preemptive multitasking and a windowed graphical user interface (GUI). It is developed by iProgramMC and available as an open-source project on GitHub.

Agentic OS is a new operating system designed for AI agents, functioning as a proactive assistant that automates tasks, scheduling, and file management.

KNOPPIX is a bootable Linux system on CD/DVD/USB that detects hardware automatically and can be used for Linux demos, rescue operations, or as a desktop environment. It includes office applications, internet tools, graphics software, and games, with Debian-based packages easily installable. The latest version (9.1) features Linux kernel 5.10 and many updated programs.

HamsterOS is an operating system developed by Mean Hamster Software, designed specifically for hamsters. It provides a simple graphical interface and basic applications tailored to rodent users.

HamsterOS is a tiny graphical desktop operating system designed to fit entirely on a single 1.44MB floppy disk, complete with a window manager, applications, and a file system. Despite its extreme size constraints, it offers a functional GUI environment reminiscent of early desktop operating systems.

The article argues that Microsoft needs a lightweight, streamlined version of Windows, referred to as "Windows Lite," to compete with Chrome OS and address the limitations of full Windows on low-end devices. It suggests that such an OS would better serve education and budget markets by focusing on simplicity, security, and performance.

CachyOS released its June 2026 update, featuring kernel optimizations, updated packages, and improved hardware support. The release includes enhancements for gaming performance, desktop environment updates, and various bug fixes to improve system stability and user experience.

NixOS 26.05 ("Ocelot") has been released, featuring updated packages, new installer images, and improvements to the Nix package manager and system configuration. The release continues the project's rolling-release model while providing a stable snapshot for new installations and upgrades.

Dragon's Egg is a formally verified, distributed operating system built on the object-capability model, designed to enforce fine-grained security principles across networked nodes.

Developer Finn Dev wrote an operating system kernel called ValiantCore entirely on his own, doing the work on Android without a PC. The kernel currently supports x86 and Intel i386 architectures, with aarch64 support in progress, and includes components like drivers, timers, and exception handling. The source code is available on GitHub.

Finn Dev has written an operating system kernel called ValiantCore entirely on his own, developing it on Android without a PC. The kernel currently supports x86 and Intel i386 architectures, with aarch64 support in progress, and includes components such as drivers, timers, and exception handling. The source code is available on GitHub.

QSOE is a QNX-inspired microkernel operating system that allows users to select from different kernel implementations, offering flexibility in system design and architecture.

The author details their experience installing SerenityOS, a Unix-like operating system with its own kernel and GUI, on a vintage ThinkPad T60 laptop. They document the installation process, hardware compatibility, and overall system performance on the older machine.

The author reflects on one year of using Omarchy, a minimalist OS built on the Linux kernel, emphasizing that its value lies not in the initial setup but in how it fades into the background, allowing the user to focus on actual work. They praise Omarchy's stability, simplicity, and the fact that it requires no ongoing tinkering, making it an effective long-term daily driver.

BlueBookOS is a project that introduces an LLM microkernel and a domain-specific language for specifying applications. It aims to use large language models as the core operating system component, allowing apps to be defined declaratively rather than through traditional imperative code.

A Hacker News user asks whether Steam OS can serve as a Windows replacement, noting growing discussion but a lack of active promotion. They seek community feedback on the OS's strengths, downsides, and whether it's too early to consider such a switch.

Apple is increasingly using Swift code inside the XNU kernel, moving beyond C and C++ for core OS components. This shift leverages Swift's memory safety and modern language features to improve kernel security and stability, marking a significant evolution in macOS and iOS kernel development.

A developer considering writing a kernel from scratch to master C asks the HN community what they would change if Linux could be remade in 2026, noting that while they appreciate Linux, no one currently competes with it.

The article discusses planned improvements for Windows 11 in 2026, focusing on addressing user complaints and making the operating system less frustrating. It highlights upcoming changes aimed at enhancing performance, usability, and overall user experience based on feedback.

Distro Fighter is a fighting game featuring Linux distro mascots battling each other. It includes characters like Tux, Beastie, SUSE Girl, and Fedora Baby, with gameplay involving special attacks and combos. The game is available for free on Linux (AppImage) and Windows.

The article examines Microsoft's shifting Windows licensing strategies, moving from traditional perpetual licenses toward subscription-based models. It analyzes how these changes affect consumers, enterprise customers, and the broader PC ecosystem, highlighting the company's push for recurring revenue through services like Microsoft 365 and potential Windows 12 subscription tiers.

AnonymOS is an object-oriented operating system that combines features from popular niche Linux distributions. It aims to provide a unique, modular approach to OS design and functionality.

NextBSD is a FreeBSD ABI-compatible kernel that integrates Mach microkernel components and Apple's launchd, aiming to combine the strengths of FreeBSD with modern kernel technologies.

Windows 11 has reached its five-year anniversary since its initial release, marking half a decade since Microsoft launched the operating system to the public.

Project Cherub is an early-build fork of TempleOS created by Rubinosław from REParadoxy. It updates the frame rate from 30 to 120 FPS and changes the system name, with future plans to add 32-bit color, SATA AHCI, NVMe, Blu-ray, GPU, and USB support while keeping the 640x480 resolution.

Project Cherub is a new fork of TempleOS created by Rubinosław from REParadoxy. The early build ISO has already increased the FPS rate from 30 to 120 and renamed the system. Future plans include support for 32-bit colors, SATA AHCI, NVMe, Blu-ray, video, GPU, and USB, while keeping the 640x480 screen resolution.