CapivaraOS is a family of Fedora-based Linux distributions built for developers: secure by default, with local AI and a full dev environment ready at first boot.

Series 2 runs on Fedora 45, in three desktop editions sharing the same base and identity:

* Marsh - KDE Plasma 6.8, the flagship
* Pup - Xfce 4.20, light and fast
* Snout - GNOME 51, clean and focused

From Series 2 on, upgrades happen in place - version to version, series to series. No reinstall. Our package repository is signed, so upgrades are verified like any other update, and Snapper snapshots the system first.

Every ISO ships with its SHA-256 and an OpenPGP signature of that checksum, so you can prove the file is ours.

Herd, the hardened server edition, is part of the family.

An independent, community-driven project, not affiliated with the Fedora Project.

Features

  • Four editions: Marsh (KDE Plasma), Pup (Xfce), Snout (GNOME) and Herd (server)
  • Local AI runs offline on your own machine - no cloud, no account
  • Btrfs snapshots with Snapper before each upgrade, rollback in one command
  • Ready in English and Brazilian Portuguese, with no language or keyboard setup
  • Own visual identity: boot splash, icons, theme and original wallpapers
  • Everyday apps included: Firefox, LibreOffice and VLC
  • COS Dev Center: local AI, language tracks, dev tools and GitHub at first boot
  • COS Config Center: nine settings modules, no terminal needed
  • Herd server: SELinux enforcing, auditd and one-command hardening
  • Signed package repository: upgrades verified like any other update
  • Built on Fedora 45, with updates already applied to the image
  • In-place upgrades from Series 2 on - no reinstall between versions
  • ISOs with SHA-256 and a detached OpenPGP signature; public key published
  • Live ISO: try before you install, without touching your disk

Project Samples

Project Activity

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License

GNU General Public License version 3.0 (GPLv3)

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Additional Project Details

Operating Systems

Linux

Intended Audience

End Users/Desktop

User Interface

KDE, X Window System (X11)

Programming Language

Unix Shell

Related Categories

Unix Shell Operating Systems, Unix Shell Live CD Distro, Unix Shell Live USB Distro

Registered

2026-07-17