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.

Features

One-Click Emulator Setup — Download, install, and auto-configure 20+ 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 metadata from SteamGridDB and libretro-thumbnails
RetroAchievements — View per-game achievements in the game detail modal (supports RetroArch, PCSX2, DuckStation, Flycast, melonDS, Mednafen)
Controller Navigation — Navigate the entire UI with a gamepad (DPad, A, B, Start)
Controller Config — Apply PS/Xbox-aware controller bindings to installed emulators in one click
BIOS Manager — Scan your BIOS files and update RetroArch's config in one click
Cloud Sync — Sync save files between devices with built-in Syncthing integration
Save Manager — Browse, back up, and manage save files across all emulators
Decomp Projects — Install and manage PC port projects (Ship of Harkinian, 2 Ship 2 Harkinian, SM64, and more)
Video Filters — Apply CRT shaders and recommended filters to RetroArch
Recommended Settings — One-click optimal config presets for every supported emulator
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	✅	✅	✅
Ryujinx	Nintendo Switch	✅	✅	✅
PCSX2	PlayStation 2	✅	✅	✅
DuckStation	PlayStation 1	✅	✅	✅
Mednafen	PS1, PC Engine, Lynx, Neo Geo Pocket, WonderSwan	✅	✅	✅
MAME	Arcade	✅	✅	✅
PPSSPP	PSP	✅	✅	✅
melonDS	Nintendo DS	✅	✅	✅
Flycast	Dreamcast, Naomi, Atomiswave	✅	✅	✅
Cemu	Wii U	✅	✅	✅
xemu	Original Xbox	✅	✅	✅
Vita3K	PS Vita	✅	✅	✅
Azahar	Nintendo 3DS	✅	✅	✅
Project64	Nintendo 64	✅	—	—
Snes9x	SNES	✅	✅	✅
mGBA	Game Boy, GBA	✅	✅	✅
Mesen2	NES, SNES, GB, GBA, PC Engine	✅	✅	✅
RetroArch	Multi-system (NES, SNES, N64, GB/GBA, PS1, and more)	✅	✅	✅
DOSBox-Staging	MS-DOS / PC	✅	✅	✅

Quick Start

Download the latest release for your platform
Launch OmniEmu and go to Library → install an emulator
Go to Settings → set your ROMs directory → Scan
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

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