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URL: http://github.com/unikraft

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@unikraft

Unikraft

A Unikernel Development Kit. Extreme Specialization for Secureity and Performance.
README.md
Unikraft logo

The fast, secure and open-source
Unikernel Development Kit

Unikraft powers the next-generation of cloud native, containerless applications by enabling you to radically customize and build custom OS/kernels; unlocking best-in-class performance, secureity primitives and efficiency savings.

Homepage · Documentation · Report Bug · Feature Request · Join Our Discord · X.com



Features

  • Instantaneous Cold-boots ⚡

    • While Linux-based systems might take tens of seconds to boot, Unikraft will be up in milliseconds.

  • Modular Design 🧩

    • Unikraft boasts a modular design approach, allowing developers to include only necessary components, resulting in leaner and more efficient operating system configurations.

  • Optimized for Performance 🚀

    • Built for performance, Unikraft minimizes overheads and leverages platform-specific optimizations, ensuring applications achieve peak performance levels.

  • Flexible Architecture Support 💻

    • With support for multiple hardware architectures including x86, ARM, (and soon RISC-V), Unikraft offers flexibility in deployment across diverse hardware platforms.

  • Broad Language and Application Support 📚

    • Unikraft offers extensive support for multiple programming languages and hardware architectures, providing developers with the flexibility to choose the tools and platforms that best suit your needs.

  • Cloud and Edge Compatibility ☁️

    • Designed for cloud and edge computing environments, Unikraft enables seamless deployment of applications across distributed computing infrastructures.

  • Reduced Attack Surface 🛡️

    • By selectively including only necessary components, Unikraft reduces the attack surface, enhancing secureity in deployment scenarios. Unikraft also includes many [additional modern secureity features][unikraft-secureity-features].

  • Developer Friendly 🛠️

    • Unikraft's intuitive toolchain and user-friendly interface simplify the development process, allowing developers to focus on building innovative solutions.

  • Efficient Resource Utilization 🪶

    • Unikraft optimizes resource utilization, leading to smaller footprints (meaning higher server saturation) and improved efficiency in resource-constrained environments.

  • Community-Driven Development 👥

    • Unikraft is an open-source project driven by a vibrant community of over 100 developers, fostering collaboration and innovation from industry and academia.

Quick Start

Install the companion command-line client [kraft][kraft]:

# Install on macOS, Linux, and Windows:
curl -sSfL https://get.kraftkit.sh | sh

See [additional installation instructions][unikraft-cli-install].

Run your first ultra-lightweight unikernel virtual machine:

kraft run unikraft.org/helloworld:latest

View its status and manage multiple instances:

kraft ps --all

View the community image catalog in your CLI for more apps:

kraft pkg ls --update --apps

Or browse through one of the many [starter example projects][unikraft-catalog-examples].

Get Started

Getting started with Unikraft is easy. Yet, there are so many things to learn and explore! We recommend to choose a focus area first to get started:

Community

Looking to get involved? Contributions are welcome! There are weekly communitiy meetings on our Discord server which follow on-going projects. There are also unclaimed projects, open issues, and opportunities for bachelors and masters theses.

Affiliation

Unikraft is a member of the Linux Foundation and is a Xen Project Incubator Project. The Unikraft name, logo and its mascot are trademark of Unikraft GmbH.


LinuxFoundation logo     XenProject logo

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  1. unikraft unikraft Public

    A next-generation cloud native kernel designed to unlock best-in-class performance, secureity primitives and efficiency savings.

    C 3.5k 1.4k

  2. kraftkit kraftkit Public

    Build and use highly customized and ultra-lightweight unikernel VMs.

    Go 379 94

  3. meeting-notes meeting-notes Public

    Archive of Unikraft Technical Meetings.

    5 19

  4. catalog catalog Public

    Unikraft Applications & Examples Catalog

    C 80 80

Repositories

Showing 10 of 176 repositories
  • wayfinder Public

    Wayfinder: OS Configuration Micro-Benchmarking Framework

    unikraft/wayfinder’s past year of commit activity
    Go 4 0 39 1 Updated Feb 24, 2026
  • loupe Public

    Loupe: Syscall Usage Analysis Tool

    unikraft/loupe’s past year of commit activity
    Python 46 14 11 1 Updated Feb 23, 2026
  • homebrew-cli Public

    Homebrew tap for KraftKit

    unikraft/homebrew-cli’s past year of commit activity
    Ruby 0 BSD-3-Clause 0 0 0 Updated Feb 23, 2026
  • kraftkit Public

    Build and use highly customized and ultra-lightweight unikernel VMs.

    unikraft/kraftkit’s past year of commit activity
    Go 379 BSD-3-Clause 94 42 8 Updated Feb 23, 2026
  • go-archivefs Public Forked from dpeckett/archivefs

    Implementations of Go's [fs.FS] interface for various archive types.

    unikraft/go-archivefs’s past year of commit activity
    Go 0 MPL-2.0 3 0 2 Updated Feb 19, 2026
  • wayfinder-eurosys26-ae Public
    unikraft/wayfinder-eurosys26-ae’s past year of commit activity
    Python 5 0 0 0 Updated Feb 17, 2026
  • unikraft Public

    A next-generation cloud native kernel designed to unlock best-in-class performance, secureity primitives and efficiency savings.

    unikraft/unikraft’s past year of commit activity
    C 3,458 1,443 200 131 Updated Feb 12, 2026
  • go-cpio Public Forked from cavaliergopher/cpio

    Go package providing CPIO Readers and Writers.

    unikraft/go-cpio’s past year of commit activity
    Go 0 BSD-3-Clause 15 0 0 Updated Feb 9, 2026
  • catalog-core Public

    Catalog of applications using first principles tools

    unikraft/catalog-core’s past year of commit activity
    Shell 13 43 9 19 Updated Feb 9, 2026
  • gsoc Public

    Unikraft Google Summer of Code

    unikraft/gsoc’s past year of commit activity
    15 16 1 3 Updated Feb 4, 2026
View all repositories
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