Offline knowledge, with sources

When the network goes down, the answers stay.

BlackoutOS is a desktop library of practical guides for emergencies. Each guide is written for it, every claim is checked against the source it came from, and all of it works with no internet at all.

Free during testing

BlackoutOS · Survival library

  • Desktop app for macOS (Apple Silicon and Intel) and Windows 10 and 11
  • The Water module: a cited guide to making water safe, encrypted for your devices
  • One licence key for two devices: a primary and an emergency one
  • Works with no internet once activated; nothing expires
Free while we test
Get BlackoutOS

You create an account first, so your key and devices are kept in one place. No payment is taken.

Six promises

What BlackoutOS is for: getting through an emergency, and keeping what people know if the internet disappears. These are the rules it keeps.

Works offline

After you activate and download, nothing needs a network: no account, no check-ins, no server. Reading, and later searching, happen on your computer.

Shows its sources

Every guide names who said it, where, when it was retrieved and under what licence. Numbers and doses are quoted exactly, never reworded.

Yours for good

What you buy never expires and never phones home. When your update period ends you keep everything you have; you only stop getting new versions.

Two devices

One key works on a primary computer and an emergency one. A dead laptop's slot can be released here on the website.

No tracking

The app sends no usage data. Your searches and bookmarks stay on your computer.

Honest about licences

Our own guides are protected. Open content such as Wikipedia stays open: you may copy it, as its licence intends.

Not another hard drive of downloads

Many offline libraries are mostly copied websites: hundreds of gigabytes, a frozen date, and an AI that asks you to check the sources yourself. BlackoutOS starts from the questions people actually ask in the first 72 hours and answers them.

A typical offline libraryBlackoutOS
ContentThird-party dumps, sold by sizeShort guides written for the situation, built on official sources, plus open knowledge as a reference
TrustNo way to see who said whatSource, date, version and licence beside every guide
AI answers"Always check sources manually"Answers only from installed guides, with citations, and "not found" when they say nothing (planned)
UpdatesA dataset frozen on one dateEach module has versions; updates are downloads, and old versions keep working
DeliveryA box that has to be built and shippedAn app and downloadable modules; delivery on an SSD later
LanguagesEnglishEnglish first, then Spanish and Ukrainian

A sample page

This is the one page in the proof of concept: Survival › Water › Making water safe › Boiling. In the app it is encrypted on disk and opens only on an activated computer. Here it is public, so you can see what a guide looks like.

How it works

  1. Get a key

    Create an account and get a key. In this PoC it is free.

  2. Install the app

    For macOS and Windows; Linux later.

  3. Activate

    Online, or with a small file carried on a phone or USB stick if the computer has no internet.

  4. Download modules

    Each collection is a module, checked against our signature before it installs.

  5. Use it offline

    For good. Nothing to renew, nothing to sync.

More on how it works, and what copy protection can and cannot do →

The plan, and where this PoC is

The content map counts six areas.

See what's inside