by hsoft

hsoft / collapseos

Bootstrap post-collapse technology

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Collapse OS

Moved to Sourcehut

The project has been moved to See issue #127 for details.

If it hasn't been already, this repo will end up being put in Archived mode. Some issues opened on Github open very interesting discussions. Do not hesitate to begin a thread referring to a Github issue on the mailing list associated to the project on Sourcehut.

Until the project is archived, know that any PR opened here will be ignored. Please submit a patch on the mailing list.


Bootstrap post-collapse technology

Collapse OS is a Forth operating system and a collection of tools and documentation with a single purpose: preserve the ability to program micro- controllers through civilizational collapse.

It it designed to:

  1. Run on minimal and improvised machines.
  2. Interface through improvised means (serial, keyboard, display).
  3. Edit text files.
  4. Compile assembler source files for a wide range of MCUs and CPUs.
  5. Read and write from a wide range of storage devices.
  6. Assemble itself and deploy to another machine.

Additionally, the goal of this project is to be as self-contained as possible. With a copy of this project, a capable and creative person should be able to manage to build and install Collapse OS without external resources (i.e. internet) on a machine of her design, built from scavenged parts with low-tech tools.

Getting started

Usage documentation is in-system, so access to documentation requires you to run Collapse OS. Fortunately, doing so in an emulator is easy.


for getting an emulated system running.

Then, run

for an introduction, follow instructions from there.

Organisation of this repository

  • blk
    : Collapse OS filesystem's content. That's actually where Collapse OS' source code is located. Everything else is peripheral.
  • recipes
    : collection of recipes that assemble Collapse OS on a specific machine.
  • tools
    : Tools for working with Collapse OS from "modern" environments. For example, tools for facilitating data upload to a Collapse OS machine through a serial port.
  • emul
    : Tools for running Collapse OS in an emulated environment.
  • tests
    : Automated test suite for the whole project.


The project unfinished but is progressing well! See Collapse OS' website for more information.

Looking for the assembler version?

The Forth-based Collapse OS is the second incarnation of the concept. The first one was entirely written in z80 assembly. If you're interested in that incarnation, checkout the



For a general discussion of Collapse OS and the ecosystem of technologies and ideas that may develop around it refer to r/collapseos

I also stick around on IRC (#collapseos on freenode).

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