# OnionUI/Onion

OS overhaul for Miyoo Mini and Mini+

Repository: https://github.com/OnionUI/Onion
Canonical: https://ross.abutalabs.com/products/onion
Homepage: https://onionui.github.io
Language: C
License: GPL-3.0
License Family: copyleft
Topics: miyoo-mini, miyoomini, emulator-frontend, retroarch
Last push: 2026-02-07T05:06:44+00:00

## Health v2 (maintenance only)
Score: 62/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 66, release rhythm 34, longevity 100
- inputs: {"age_days": 1535, "days_push": 207, "days_rel": 225, "gap_med": null, "n_releases_24m": 1}
- flags: prerelease_only
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4254, forks 356 (observed 2026-08-28T04:08:40.490042+00:00)

## What it is
Onion is a custom operating system overhaul for the Miyoo Mini and Mini+ retro handheld consoles, built in C. It bundles 100+ emulators, a custom RetroArch build, save/resume, themes, and quality-of-life features like GameSwitcher and activity tracking.

## Use cases
- install custom OS on Miyoo Mini
- retro game emulation on handheld
- auto-save and resume retro games
- customize handheld console UI with themes
- run native ports on Miyoo Mini+
- track retro gaming play activity

## When to choose
- you own a Miyoo Mini or Mini+ and want a polished emulation experience
- you want instant save/resume and fast game switching on a handheld
- you want community themes and a large built-in emulator set

## When to avoid
- you use a different handheld device than the Miyoo Mini/Mini+
- you want a general-purpose Linux desktop OS
- you prefer stock firmware or another custom OS like GarlicOS

## Facets
- artifact type: application
- maturity: active
- function: gui, game
- domain: gaming-tools, embedded-systems, operating-systems
- platform: embedded, cpp
- tags: retro-gaming, emulator-frontend, miyoo-mini, retroarch, custom-firmware, handheld, emulation, linux

## Member repositories
- OnionUI/Onion (main) score 62

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:40.490042+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 2026-08-29T18:22:09.279770+00:00, confidence not recorded.
  - readme: https://github.com/OnionUI/Onion (fetched 2026-08-28T04:08:40.490042+00:00, sha 5fb07eae4619)
  - homepage: https://onionui.github.io (fetched 2026-08-29T09:11:46.828517+00:00, sha 5e4be48ec915)
- Data as of 2026-08-30T08:39:29.467469+00:00.