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  2. List of operating systems - Wikipedia

    en.wikipedia.org/wiki/List_of_operating_systems

    JNode (Java New Operating System Design Effort), written 99% in Java (native compiled), provides own JVM and JIT compiler. Based on GNU Classpath. [37] [38] JX Java operating system that focuses on a flexible and robust operating system architecture developed as an open source system by the University of Erlangen. KERNAL (default OS on ...

  3. Operating system - Wikipedia

    en.wikipedia.org/wiki/Operating_system

    There are no restrictions on who can contribute code to open source operating systems; such operating systems have transparent change histories and distributed governance structures. [124] Open source developers strive to work collaboratively to find and eliminate security vulnerabilities, using code review and type checking to expunge ...

  4. Monolithic kernel - Wikipedia

    en.wikipedia.org/wiki/Monolithic_kernel

    A monolithic kernel is an operating system architecture with the entire operating system running in kernel space. The monolithic model differs from other architectures such as the microkernel [1] [2] in that it alone defines a high-level virtual interface over computer hardware. A set of primitives or system calls implement all operating system ...

  5. Kernel (operating system) - Wikipedia

    en.wikipedia.org/wiki/Kernel_(operating_system)

    A microkernel allows the implementation of the remaining part of the operating system as a normal application program written in a high-level language, and the use of different operating systems on top of the same unchanged kernel. It is also possible to dynamically switch among operating systems and to have more than one active simultaneously ...

  6. Hybrid kernel - Wikipedia

    en.wikipedia.org/wiki/Hybrid_kernel

    The Windows NT operating system family's architecture consists of two layers (user mode and kernel mode), with many different modules within both of these layers.One prominent example of a hybrid kernel is the Microsoft Windows NT kernel that powers all operating systems in the Windows NT family, up to and including Windows 11 and Windows Server 2022, and powers Windows Phone 8, Windows Phone ...

  7. Distributed operating system - Wikipedia

    en.wikipedia.org/wiki/Distributed_operating_system

    Structure of monolithic kernel, microkernel and hybrid kernel-based operating systems. A distributed OS provides the essential services and functionality required of an OS but adds attributes and particular configurations to allow it to support additional requirements such as increased scale and availability.

  8. Microkernel - Wikipedia

    en.wikipedia.org/wiki/Microkernel

    Structure of monolithic and microkernel-based operating systems, respectively. In computer science, a microkernel (often abbreviated as μ-kernel) is the near-minimum amount of software that can provide the mechanisms needed to implement an operating system (OS).

  9. Architecture of Windows NT - Wikipedia

    en.wikipedia.org/wiki/Architecture_of_Windows_NT

    The Windows NT operating system family's architecture consists of two layers (user mode and kernel mode), with many different modules within both of these layers.. The architecture of Windows NT, a line of operating systems produced and sold by Microsoft, is a layered design that consists of two main components, user mode and kernel mode.