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Dr. Tim King, the developer behind AmigaDOS and the Tripos operating system, has passed away. He made significant contributions to the Amiga's software history.
Illinois passed HB5511, which requires operating system providers, including open source projects like Linux, to implement age verification by 2028 with no open source exemption.
Explores the IBM i (OS/400) operating system, tracing its origins from the AS/400 platform and explaining its unique architecture where the Db2 relational database is integrated directly into the kernel.
os8088 is a hobbyist Macintosh System 1-style GUI operating system for the Intel 8086/8088 PC, written entirely in real-mode assembly with preemptive multitasking and fitting in 256K of RAM. The project is complete and its source code is available.
9front, a Plan 9 fork, releases a new version codenamed 'THIS WAS SUPPOSED TO BE FUN', featuring updates to affinewarp, a new gdbfs tool, Synaptics driver, SHA3 support in libsec, and more.
CP/M-386 is an early-stage open-source implementation of CP/M for 386 protected mode, derived from CP/M-68K, offering full BDOS parity with CP/M 2.2 and CP/M-68K 1.3.
GNU Hurd's 2026 Q2 quarterly report highlights progress on 9pfs write support, AArch64 kernel patches, POSIX msync validation, and various bug fixes.
RISC OS Open marks its 20th anniversary with a retrospective of key milestones in open-sourcing the RISC OS operating system, including its port to the Raspberry Pi.
NetBSD 11.0 has been released after a long delay, with installation images and notes available. The release acknowledges open security issues and plans a follow-up 11.1 within two months.
Oscar Toledo G. recounts developing a windowed operating system in machine code for a homebrew Am29000 computer in 1996-1997, and his recent journey to rediscover and document it.
This paper argues that agentic AI systems are currently in the experimentation phase and need stable abstractions similar to POSIX and Kubernetes, proposing an Agent Operating System.
Apple released macOS Tahoe 26.6 with security fixes addressing multiple vulnerabilities including buffer overflows, authorization issues, sandbox escapes, and kernel memory corruption.
A retrospective on Windows NT 3.1, Microsoft's first fully 32-bit operating system, discussing its advantages (stability, security, portability, NTFS) and disadvantages (high hardware demands, limited software support).
The post explores the potential design of agentic operating systems, where users describe outcomes rather than directly interacting with programs, and raises concerns about trust, privacy, opaque decision-making, and vendor lock-in.
This paper investigates OS resilience against self-state attacks on self-hosted AI agents, characterizing an attack space and evaluating layered defense strategies. It finds that while a layered defense stack is effective, a small residual attack surface remains structurally indistinguishable at the OS level.
FreeBSD 16 has removed the last GNU GPL licensed code from its base system, retiring the dialog utility and the GNU subtree. This marks a milestone in FreeBSD's move to a fully permissively-licensed base system.
Apple has released public betas for iOS 27 and other OS updates, featuring the delayed Siri AI revamp, allowing users to test the upcoming fall releases.
The macOS 27 Golden Gate public beta introduces a subdued Liquid Glass design, performance improvements, and customizable Siri voices, making it a worthwhile update for Mac users.
Nautis is an AI-native operating system designed for founders.
A long-time Linux user recounts their month-long experience using Windows 11 exclusively, covering setup, daily use, and overall impressions, including both positive and negative aspects.