OmniEmu

All your games. One place.

OmniEmu is a cross-platform emulator manager, game launcher, and ROM library for Windows, macOS, and Linux. Install emulators with one click, scan your ROMs, and launch games from a unified library — no terminal required.

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Features

• One-Click Emulator Setup — Download, install, and auto-configure 10 emulators from inside the app
• ROM Library — Scan your ROMs, browse by platform, and launch games directly
• Auto-Update — Built-in updater keeps OmniEmu current without manual downloads
• Game Art Scraping — Automatically fetches covers, screenshots, and titles
• Controller Navigation — Navigate the entire UI with a gamepad (DPad, A, B, Start)
• BIOS Manager — Scan your BIOS files and update RetroArch's config in one click
• Light & Dark Mode — Choose your theme or follow the system preference
• Cross-Platform — Identical experience on Windows, macOS, and Linux (x64 & ARM64)

Supported Emulators

Emulator	Systems	Windows	macOS	Linux
Dolphin	GameCube, Wii	✅	✅	✅
RPCS3	PlayStation 3	✅	✅	✅
Eden	Nintendo Switch	✅	✅	✅
PCSX2	PlayStation 2	✅	✅	✅
MAME	Arcade	✅	✅	✅
PPSSPP	PSP	✅	✅	✅
DuckStation	PlayStation 1	✅	✅	✅
melonDS	Nintendo DS	✅	✅	✅
Flycast	Dreamcast, Naomi, Atomiswave	✅	✅	✅
RetroArch	Multi-system (NES, SNES, N64, GB/GBA, PS1, and more)	✅	✅	✅

Quick Start

1. Download the latest release for your platform
2. Launch OmniEmu and go to Library → install an emulator
3. Go to Settings → set your ROMs directory → Scan
4. Browse your library and launch any game

Downloads

Download the latest build from the releases page.

Note: The .yml files you see in releases are metadata used by the built-in auto-updater — you can ignore them.

Install Guide

macOS — OmniEmu-*.dmg: Drag to Applications. Right-click → Open on first launch (unsigned).

sudo xattr -rd com.apple.quarantine /Applications/OmniEmu.app

Windows — OmniEmu-*-win-*.exe. SmartScreen → More Info → Run anyway. Portable .zip versions also available.

Linux — OmniEmu-*-linux-*.AppImage: chmod +x then ./OmniEmu*.AppImage. Install libfuse2 if needed.

Building from Source

Prerequisites

• Node.js 20+ (recommended: 22)
• npm 10+

Setup & Run

npm install
npm run start

Package for Distribution

# macOS (universal)
npm run package:mac

# Windows
npm run package:win

# Linux
npm run package:linux

# All at once
npm run package:all

Output goes to ./release/.

License

MIT