Linux

Shadowfetch Linux · Umbra · 3.5.0 · Fire and Ice Workbench

Shadowfetch Linux 3.5.0

Fire for connected production. Ice for local-first agent work. Four consequence-aware workspaces, optional local AI, scoped coding agents, and a recovery path you can see before anything changes.

  • GPL-3.0 · open source
  • No telemetry
  • GPG-signed ISO
  • Built by one developer

shadowfetch-3.5.0-amd64.iso · 3.98 GB (3.71 GiB) · amd64 hybrid ISO · built 2026-08-27

Download ISOVerifyInstall

Shadowfetch Linux is free and open-source software. Commercial product apps are separate atshadowfetch.com. The 3.5.0 image and its verification artifacts use the established signed download endpoint. Historical releases remain on Archive.org; a 3.5.0 Archive mirror is not claimed yet.

$ sha256sum shadowfetch-3.5.0-amd64.iso
2af853b1f5dedfca17a7a63783f4c881e72e912f26082b10c07d45aafe57b995
  shadowfetch-3.5.0-amd64.iso

$ gpg --verify shadowfetch-3.5.0-amd64.iso.asc shadowfetch-3.5.0-amd64.iso
gpg: Good signature from "Shadowfetch Linux"
      8F13 CE15 35EE 1F4A 2916  A1F7 3C5C 900B 7BE8 0CA1

$ sudo dd if=shadowfetch-3.5.0-amd64.iso \\
     of=/dev/sdX bs=4M status=progress
Every release is checksummed and GPG-signed. Nothing here phones home.

Live walkthrough

Shadowfetch Linux 3.5 Fire and Ice

About five minutes on the current Fire and Ice desktop — Welcome, Element Workbench, and how the element changes the session.

Watch on YouTubeif the player does not load.

The desktop as it ships

9 screenshots · captured from the current ISO

  • Shadowfetch Linux 3.5.0 Fire desktop with the orange Umbra wallpaper, Plasma panel, and no application obscuring the desktop
    Fire: connected production posture
  • Shadowfetch Linux 3.5.0 Ice desktop with the blue Umbra wallpaper, Plasma panel, and no application obscuring the desktop
    Ice: local-first agent posture
  • Shadowfetch Linux 3.5.0 Welcome screen on Fire with the heading Pick your flame and the Fire and Ice choice visible
    Pick your flame: Fire
  • Shadowfetch Linux 3.5.0 Welcome screen on Ice with the heading Pick your flame and the Fire and Ice choice visible
    Pick your flame: Ice
  • Element Workbench on Shadowfetch Linux 3.5.0 Fire showing Software Studio, AI Lab, Production Ops, and Creative AI with consequence summaries and Create project actions
    Four production environments, one plan
  • Element Workbench on Shadowfetch Linux 3.5.0 Ice showing Software Studio, AI Lab, Production Ops, and Creative AI with Ice privacy guidance
    AI Lab leads; network starts off
  • Shadowfetch Linux 3.5.0 optional AI and coding-agent page listing Buzz, OpenAI Codex CLI, Anthropic Claude Code, xAI Grok Build, and Cursor Agent
    Buzz, Codex, Claude, Grok, Cursor
  • Shadowfetch Linux 3.5.0 Calamares summary showing the selected Fire installation, partition plan, locale, keyboard, user, and bootloader before installation
    Calamares summary: nothing hidden
  • Shadowfetch Linux 3.5.0 Fire Welcome screen still responsive more than 36 minutes into the concurrent release stress test
    UI at T+36 minutes of sustained load

Fire and Ice Workbench

The element changes how the work starts.

  • Element Workbench

    Software Studio, AI Lab, Production Ops, and Creative AI show disk, network, account, accelerator, and package consequences before one signed transaction creates a private project with rules, provenance, tests, runbooks, and receipts.

  • Fire and Ice postures

    Fire starts connected and throughput-oriented. Ice starts agent sessions with no network. The selected element changes the recommendations, Firebreak default, project manifest, and launch receipt — not only the wallpaper.

  • Buzz and optional coding agents

    Buzz is the one optional local-model workspace and asks before downloading a model. Codex, Claude Code, Grok Build, and Cursor Agent remain independent, digest-verified choices with native sign-in and no embedded credential.

  • Firebreak and checkpoints

    Agent sessions keep the system read-only, scope writes to the selected project, strip known secret variables, and record what launched. A project checkpoint supplies a visible diff and a practical undo path.

  • Phoenix and Fireproof

    Profile installs and updates are simulated, explicitly confirmed, wrapped in restore points on Btrfs, checked afterward, and left with a failure receipt and retry path when something goes wrong.

  • Evidence, not adjectives

    The exact signed ISO passed 11 of 11 prepublication gates, fresh BIOS and UEFI installs, 15 visual frames, recovery testing, and 2,709 seconds of concurrent load with zero failures.

SHA-256 2af853b1f5dedfca17a7a63783f4c881e72e912f26082b10c07d45aafe57b995· Verify the image· More screenshots

Independent coverage

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