Specifiction
For vendors
AdvertiseTop spots, featured rows, home sponsor Get listedAdd a product we don't cover yet Claim a listingFree: verify the domain, then correct your page Vendor dashboardNumbers, orders and placements
List your tool
Vendor dashboard
Tech riderRev. 22 Sept 2026

OnionOS

Ch 156.4of 25 Emulation Frontends
  1. 1Runs onself-hosted
  2. 2CostsNot stated by the maker
  3. 3Supported platformsMiyoo Mini and Miyoo Mini+
  4. 4Emulators includedYes
  5. 5Library importYes
  6. 6Metadata scrapingYes
  7. 7Controller navigationYes
  8. 8Portable modeYes
7 lines stated Written from the maker's own pages: onionui.github.io
Visit site Alternatives
The OnionOS homepage

Overview

OnionOS is ranked #15 of 25 in emulation frontends on Specifiction. It runs on Self-hosted.

Compared on emulation frontends

Supported platforms
Miyoo Mini and Miyoo Mini+onionui.github.io
Emulators included
Yesonionui.github.io
Library import
Yesonionui.github.io
Metadata scraping
Yesonionui.github.io
Controller navigation
Yesonionui.github.io
Portable mode
Yesonionui.github.io

Facts

Product
Onion is an OS overhaul for the Miyoo Mini and Mini+ handhelds.onionui.github.io · 2 Oct 2026
Game switching
GameSwitcher lets users browse recently played games and resume them with screenshots showing where they left off.onionui.github.io · 2 Oct 2026
Emulation
Onion includes RetroArch with dedicated drivers, custom overlays and filters, and optimized emulators.onionui.github.io · 2 Oct 2026
Game collection tools
Its Search app finds games by keyword, and its Game List Options menu can select cores, fetch cover images, launch Netplay, and filter lists.onionui.github.io · 2 Oct 2026
Customization
Users can change themes and configure system settings, network services, and button shortcuts through included tools.onionui.github.io · 2 Oct 2026
Activity tracking
The Activity Tracker records game playtimes, displays total playtime in the top bar, and lets users share playtime screenshots.onionui.github.io · 2 Oct 2026
Network features
On Miyoo Mini Plus, Onion offers Netplay, over-the-air updates, time synchronization, cover scraping, and network services including SMB, HTTP, SSH, and FTP.onionui.github.io · 2 Oct 2026
Installation
Onion is installed and kept on an SD card; the maker says Windows users can use Onion Desktop Tools to prepare the card and install or update Onion.onionui.github.io · 2 Oct 2026
Device requirements
Installation instructions specify minimum firmware versions of 20220419 for Miyoo Mini and 20230505 for Miyoo Mini+.onionui.github.io · 2 Oct 2026
Notable limitation
The built-in game image scraper is available on Miyoo Mini Plus only, according to the FAQ.onionui.github.io · 2 Oct 2026
Support
The project points users to GitHub Discussions, Discord, Reddit, and Facebook for community channels.onionui.github.io · 2 Oct 2026
GameSwitcher
GameSwitcher lets users browse recently played games and resume them from a screenshot of where they left off.onionui.github.io · 3 Oct 2026
Package Manager
The Package Manager app installs and uninstalls emulators and apps.onionui.github.io · 3 Oct 2026
Game library
Search finds games by keyword, and Activity Tracker records playtime and displays total playtime in the top bar.onionui.github.io · 3 Oct 2026
Ports
The Ports Collection page describes 61 game ports; some require users to provide licensed game files.onionui.github.io · 3 Oct 2026
Connected features
On Miyoo Mini Plus, Onion supports OTA updates, date and time synchronization, game-cover scraping, and network services including SMB, HTTP, SSH, FTP, Telnet, hotspot, and VNC.onionui.github.io · 3 Oct 2026
Multiplayer
Netplay supports online or local network sessions; Easy Netplay on two Miyoo Mini Plus devices needs no prior Wi-Fi setup, and Pokémon trading is available for GB/GBC.onionui.github.io · 3 Oct 2026
Installation support
Windows users can use Onion Desktop Tools to format an SD card and download, install, update, and configure Onion.onionui.github.io · 3 Oct 2026
Known limitation
The FAQ says a MainUI issue can prevent Wi-Fi networks with special characters from connecting, and reports no fix because MainUI is closed source.onionui.github.io · 3 Oct 2026

Best OnionOS alternatives

See all 20
All accessCh 01 RetroArch Free planAndroidiOS Free to start7.9 All accessCh 02 ES-DE Frontend Free planAndroidLinux Free to start7.3 All accessCh 03 Lakka Free planLinuxMac Free to start7.3 All accessCh 04 RetroHub Free planLinuxMac Free to start7.3 All accessCh 05 LaunchBox Free planAndroidWindows Free to start7.1 All accessCh 06 Pegasus Frontend Free planAndroidLinux Free to start7.1

Where it ranks on Specifiction

Is OnionOS yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote OnionOS

Sources