# traderepublic/Cilicon

🛠️ Self-Hosted ephemeral macOS CI on Apple Silicon

Repository: https://github.com/traderepublic/Cilicon
Canonical: https://ross.abutalabs.com/products/cilicon
Language: Swift
License: MIT
License Family: permissive
Topics: ci, github-actions, macos, self-hosted, self-hosted-runner, virtualization, m1, m2, silicon, selfhosted, atom-mobile-platform, element-experience-infra
Last push: 2025-12-12T15:08:25+00:00

## Health v2 (maintenance only)
Score: 62/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 56, release rhythm 48, longevity 99
- inputs: {"age_days": 1395, "days_push": 264, "days_rel": 264, "gap_med": 54.5, "n_releases_24m": 5}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1187, forks 43 (observed 2026-08-28T04:03:55.207166+00:00)

## What it is
Cilicon is a self-hosted macOS app that uses Apple's Virtualization Framework to create, provision, and run ephemeral CI virtual machines on Apple Silicon with near-native performance. It supports GitHub Actions, Buildkite, GitLab Runner, and arbitrary scripts, pulling pre-built VM images via an integrated OCI client.

## Use cases
- run ephemeral macOS CI runners on Apple Silicon
- self-host GitHub Actions runners on a Mac
- provision disposable macOS VMs for each CI job
- run GitLab Runner or Buildkite agents in isolated VMs
- pull prebuilt macOS CI images from OCI registries
- replace expensive hosted macOS CI with self-hosted hardware

## When to choose
- you have Apple Silicon Mac hardware and want self-hosted macOS CI
- you need ephemeral, isolated VMs per CI job with near-native performance
- you use GitHub Actions, GitLab CI, or Buildkite and need macOS runners

## When to avoid
- you need CI on Linux or Windows hosts
- you don't have Apple Silicon hardware
- you want a fully managed hosted CI solution without maintaining Macs

## Facets
- artifact type: application
- maturity: active
- function: ci-cd, deployment, developer-tools
- domain: developer-tools, self-hosted, apple-ecosystem
- platform: self-hosted
- tags: apple-silicon, ephemeral-vms, github-actions-runner, gitlab-runner, buildkite, virtualization-framework, tart, oci-images, virtualization, devops, macos, desktop

## Member repositories
- traderepublic/Cilicon (main) score 62

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:55.207166+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 2026-08-30T06:23:46.047524+00:00, confidence not recorded.
  - readme: https://github.com/traderepublic/Cilicon (fetched 2026-08-28T04:03:55.207166+00:00, sha 719b96ab0b6e)
- Data as of 2026-08-30T08:39:29.467469+00:00.