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IT & Infrastructure

Best Server Operating System in 2026

  1. 01 AlmaLinux OS

    AlmaLinux OS is for users seeking a community-owned enterprise Linux distribution without a commercial license agreement, including those looking for a CentOS Linux replacement.

    Free plan Open source Windows · Linux · API · Self-hosted
    9.0 Visit Specs
  2. 02 FreeBSD gpart

    It suits FreeBSD administrators managing disk partition providers, usually disks, on servers, desktops, appliances, or embedded systems.

    Free plan Self-hosted
    8.4 Visit Specs
  3. 03 Nix

    Nix suits technically comfortable users who need reproducible package builds, system configuration or shared development environments.

    Free plan Windows · macOS · Linux · Self-hosted
    8.4 Visit Specs
  4. 04 Alpine Linux
    Free plan Linux · Self-hosted
    8.1 Visit Specs
  5. 05 Amazon Linux

    It suits teams deploying Linux on Amazon EC2 or in Docker-compatible environments, including local development.

    Free plan Linux · Self-hosted
    8.0 Visit Specs
  6. 06 Debian

    Debian suits people and organizations seeking a free operating system for personal computers or cloud virtual machines.

    Free plan Linux · Self-hosted
    8.0 Visit Specs
  7. 07 OmniOS
    From $41.67/mo Free plan Linux · Self-hosted
    7.9 Visit Specs
  8. 08 CentOS Stream
    Free plan Linux · Self-hosted
    7.8 Visit Specs
  9. 09 Fedora CoreOS
    Free plan Linux · Self-hosted
    7.7 Visit Specs
  10. 10 Photon OS
    Free plan Linux · Self-hosted
    7.6 Visit Specs
  11. 11 Ubuntu Server

    Ubuntu Server suits people deploying Linux on physical or virtual servers, cloud infrastructure or IoT and edge devices.

    From $2.08/mo Free plan Linux · Self-hosted
    7.6 Visit Specs
  12. 12 NetBSD
    Free plan Self-hosted
    7.5 Visit Specs
  13. 13 Rocky Linux

    Rocky Linux suits organizations and administrators seeking a free enterprise operating system compatible with Red Hat Enterprise Linux.

    Free plan Windows · Linux · Self-hosted
    7.5 Visit Specs
  14. 14 OpenIndiana
    Free plan Linux · Self-hosted
    7.4 Visit Specs
  15. 15 Oracle Solaris
    Free plan Self-hosted
    7.1 Visit Specs
  16. 16 Bottlerocket
    Linux
    5.9 Visit Specs
  17. 17 DragonFly BSD
    Linux
    5.8 Visit Specs
  18. 18 Google Container-Optimized OS
    Linux
    5.7 Visit Specs
  19. 19 Kairos
    Web · Linux
    5.7 Visit Specs
  20. 20 HP-UX
    5.6 Visit Specs
  21. 21 illumos
    Linux
    5.6 Visit Specs
  22. 22 IBM AIX
    5.5 Visit Specs
  23. 23 openEuler
    Linux
    5.5 Visit Specs
  24. 24 Red Hat OpenStack Services on OpenShift
    Web · Linux
    5.5 Visit Specs
  25. 25 OpenBSD httpd
    5.4 Visit Specs
How this list is ordered. Specifiction scores each tool on how fully its maker documents it, whether its prices are published, where the research puts it, the platforms it runs on and whether it can be tried for free (how we rank). Makers can also buy a numbered place (how Specifiction is paid for).

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