# ffwff/lilith

x86-64 os made in crystal

Repository: https://github.com/ffwff/lilith
Canonical: https://ross.abutalabs.com/products/lilith
Language: Crystal
License: NOASSERTION
License Family: other
Topics: crystal, operating-system
Last push: 2020-10-01T05:22:26+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2620, "days_push": 2162, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1172, forks 27 (observed 2026-08-28T04:03:51.691877+00:00)

## What it is
Lilith is a hobby x86-64 operating system with a POSIX-like kernel and userspace written in Crystal. It includes a garbage collector, FAT16 filesystem support, preemptive multitasking, and a simple window manager with graphical programs.

## Use cases
- experiment with an operating system written in Crystal
- study a hobby x86-64 kernel implementation
- run a small POSIX-like OS in QEMU
- learn about preemptive multitasking and syscalls
- explore a garbage collector in a kernel context

## When to choose
- you want to read or hack on an OS kernel written in Crystal
- you need a small educational x86-64 OS to run under QEMU

## When to avoid
- you need a production-ready or well-supported operating system
- you need broad hardware support or a stable ABI
- you don't want to work with an experimental hobby project

## Facets
- artifact type: application
- maturity: experimental
- function: interpreter, concurrency, file-system, graphics
- domain: operating-systems, programming-languages
- platform: cpp, cli
- tags: operating-system, kernel, crystal, x86-64, posix, hobby-os, qemu, garbage-collector, linux

## Member repositories
- ffwff/lilith (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:51.691877+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:28:26.623439+00:00, confidence not recorded.
  - readme: https://github.com/ffwff/lilith (fetched 2026-08-28T04:03:51.691877+00:00, sha 57b3e0cf6528)
- Data as of 2026-08-30T08:39:29.467469+00:00.