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Image: github.com · Greia home screen with large Activity cards for creating, playing and learning

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Greia: a simple OS for small children on old laptops

A developer built a child-friendly operating system for old hardware with Claude after a lightweight Linux setup proved confusing for his young daughters.

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Credits

  • Reddit poster orblabs Source ↗
  • Repository account frozenpepper Source ↗

Earliest dated source: 30 Oct 2026

Code ↗

The full story

Greia is an operating system made for little kids, their parents and old hardware. The maker, a game developer and father of two girls aged 5 and 3, first gave them an old laptop running the lightweight antiX Linux. They loved it, but the desktop, icons and keyboard shortcuts made it easy for a 3-year-old to open, close or break things and get lost.

He built Greia with Claude (he mentions Opus) to fix that, and the repository has now been made public.

How it was done

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Sources

From a short post by the maker, so the details are as they tell them.

  • Reddit: GREIA - A full OS made for little kids, their parents and ancient hardwareForum threadreddit.com
    Reddit poster: orblabsPosted 30 Oct 2026

    The maker's post on r/ClaudeAI.

    If it disappears: archived copy of Reddit: GREIA - A full OS made for little kids, their parents and ancient hardware (opens in a new tab)

  • The code: github.comCode or repositorygithub.com
    Repository account: frozenpepper

    The project on GitHub.

  • Reddit: Finally introducing GREIA - A full OS made for little kids and their parentsForum threadDeleted on Redditreddit.com

    The poster has deleted it, but the original is still readable (it can take a few seconds to load): archived copy of Reddit: Finally introducing GREIA - A full OS made for little kids and their parents (opens in a new tab)

  • Reddit: Finally introducing GREIA - A full OS made for little kids and their parentsForum threadDeleted on Redditreddit.com

    The poster has deleted it, but the original is still readable (it can take a few seconds to load): archived copy of Reddit: Finally introducing GREIA - A full OS made for little kids and their parents (opens in a new tab)

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What this is. Real projects where people used Claude to build, fix, port, revive or take apart something, from jailbroken Kindles to rebuilt DOS games, plus the times it went badly wrong. Every build links to where it was shared, and every source is listed here.

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