Description
A free, open-source desktop operating system — a derivative of the legendary
Haiku OS,
made for engineers, makers, and anyone who wants a computer that stays fast and private.
Experience a new level of efficiency with an OS that bundles every critical engineering
and office tool you need to get the job done.
The name SCHWARZPAUSE is the German term for a blackline print — a technical drawing reproduced with black or very dark lines on a light background. It may also be classified more broadly as a whiteprint.
I'm not part of the Haiku team, and I'm not sponsored by anyone — but if you like my work, please buy the Haiku team a coffee for their great achievements, or fork and adapt SCHWARZPAUSE to your own needs on GitHub!
? How to use it USB · verify
Put it on a USB stick
Your download is a compressed file (.xz) — don't unzip it into a folder; you write it whole onto a USB stick (8 GB or larger — everything on the stick is erased).
Easiest — balenaEtcher (balena.io/etcher, Windows/Mac/Linux): open it, click Flash from file, pick the .xz (Etcher unpacks it for you), choose your stick, click Flash.
Rufus (Windows): Rufus can't read the .xz, so unpack it first with 7-Zip (right-click → 7-Zip → Extract Here), then in Rufus pick your stick and the .iso, choose DD / Image mode, and Start.
Then boot from the stick and choose the entry that lists your USB stick as a disk.
Optional — check the download is complete
On Windows, open PowerShell (Start → type PowerShell) and paste:
Get-FileHash "$HOME\Downloads\schwarzpause-0.1-x86_64.iso.xz"
The long code it prints should exactly match this one:
14cbdab8c63b3240706d8ea5e3565eb266c9f0a20c9e6aff17bb08a6c2cc46cf
Match → you're good to go. No match → download again.
Mac: shasum -a 256 <file> · Linux: sha256sum <file>
Music licensed via Envato Elements
Honors
-
Haiku —
the independent, open-source operating system SCHWARZPAUSE is built on,
written by volunteers over more than two decades. - bartowski — for the GGUF quantization of the Qwen model that SCHWARZBrOT runs on.
- The OpenSCAD developers — for the modeller that SCHWARZSEHER builds upon.
Thank you for your great work!
Technical details
SCHWARZPAUSE is a Haiku derivative for x86_64, distributed as a bootable anyboot image (~2.2 GB). Write it to a USB stick in DD/image mode and boot from it.
SCHWARZBrOT is the built-in offline AI chat. It runs a Qwen3.5-4B model locally through llama.cpp — no internet connection, no account, and no data ever leaves the machine. It needs a CPU with AVX2 (most machines from ~2015 onward). The model is a separate, optional ~2.9 GB download; without it, SCHWARZPAUSE works normally and simply has no chat.
SCHWARZSEHER is a visual authoring layer for OpenSCAD: draw and dimension shapes and it generates clean .scad code, which OpenSCAD renders. OpenSCAD stays the source of truth and is shipped unmodified.
Licensing — Haiku: MIT License. llama.cpp: MIT License. Qwen3.5: Apache License 2.0, © Alibaba Cloud (Qwen Team); GGUF quantization by bartowski, Apache License 2.0. OpenSCAD: GPLv2, bundled as a separate, unmodified program (mere aggregation). SCHWARZPAUSE branding and artwork, SCHWARZBrOT and SCHWARZSEHER © 2026 Chrizlys (huggingface.co/Chrizlys). Every bundled package keeps its own license; the full texts are in /boot/system/data/licenses on the running system. Haiku® and the HAIKU logo® are registered trademarks of Haiku, Inc.; SCHWARZPAUSE is not affiliated with, endorsed by, or sponsored by Haiku, Inc.
Disclaimer
SCHWARZPAUSE is based on Haiku, but it is not the official distribution from the Haiku Project.
For information about the official Haiku project, please visit haiku-os.org.
Chrizlys is not associated with the Haiku project. To obtain support for SCHWARZPAUSE, please contact github.com/Chrizlys/SCHWARZPAUSE/issues.
This software is work in progress and has missing functionality as well as many (known and unknown) bugs. Use SCHWARZPAUSE at your own risk.