OneCoreOS

Coming in 2026

A research report by the OneCoreOS Team

Key points of OneCoreOS

OneCoreOS is our primary focus. It's a unified, modern operating system that gives users control and a stable, high-performance experience. Building on lessons from OneCore Linux, OneCoreOS eliminates fragmentation by providing a consistent base that benefits both everyday and power users.

Unified base; stable & consistent experience

Most operating systems are fragmented across distributions and platforms. Without a unified base, users face inconsistency and instability. OneCoreOS addresses this with a single, reliable foundation and the following core technologies:

Componentization

Every program is represented as a component. Components enable fast, transactional updates, efficient distribution, and seamless rollbacks when needed.

Storage Pool

The system is organized into multiple volumes on your device. Separating OS files, user data, and applications improves resilience, simplifies recovery, and reduces the risk that a single fault will disable the entire system.

Unified API

Core services expose the Unified OneCoreOS API, designed for stability and performance. This API provides a consistent contract for critical functionality, reducing regressions and improving compatibility.

Simple file structure

Some operating systems lack a clear file structure, with naming schemes that are no longer logical or descriptive. OneCoreOS adopts a human-readable hierarchy so users can easily understand how their system is organized.

Modernity first, code rot last

We prioritize current, well-maintained software and instruction sets. Legacy and obsolete components have been intentionally excluded to reduce maintenance burden and improve security. OneCoreOS removes 32-bit support to focus on native 64-bit performance and long-term reliability.

Trusted App Runtime

Applications are delivered through the Trusted App Runtime. This runtime isolates applications from the unified base. By default, apps install per-user and do not require administrative privileges, limiting access to critical components and improving safety and stability.

Micro-optimizations lead to macro-optimizations

Since 2023, OneCoreOS has incorporated over 50 targeted micro-optimizations. Small improvements compound into meaningful performance and reliability gains:

• Faster runtime speed

  A compact and efficient core enables applications to start faster and run with less overhead. Technologies such as LLVM and mimalloc contribute to runtime performance improvements.

• Smaller system size

  All components are built with lab-developed optimizations, resulting in smaller kernels and more compact applications.

• Better performance

  OneCoreOS has been in active development for nearly three years. Lessons learned from OneCore Linux led to a custom build system and toolchain focused entirely on performance and long-term maintainability.

Design as a defining feature

Design is fundamental to the OneCoreOS experience. Software should feel intentional, coherent, and reliable. In 2025, we expanded our design team to refine workflows, accessibility, and visual consistency.

OneCoreOS must be executed with precision, and we hope it empowers you to build a beautiful future.

OneCoreOS will break through the frontier of innovation

Modern operating systems often suffer from fragmented vision and poor execution. Our goal is to unify the best ideas into a single operating system without creating another endless standard.

Through the use of compatibility layers, existing software will be able to run on OneCoreOS while preserving the integrity of the unified base.

The OneCoreOS Team thanks you for reading this document about the future we are building.

We look forward to seeing you in 2026, trying out OneCoreOS!