* feat(permissions): gate emulator streaming behind a group permission Add a streaming permission entity. Read shows streaming and allows joining a session; write allows starting one. Users without read get a disabled streaming config, so every streaming surface hides. Migration 0152 grants read and write to every existing group, so nobody loses access on upgrade. Groups created afterwards start without it. Owner-scoped session controls (save, exit, release) stay ungated so a revoked user can still leave a running game without losing saves. * fix(streaming): pr-ready code-review fixes for the streaming grant Own-only read no longer joins other users' sessions, the config refetches on permissions:changed, the store skips the joinable request when streaming is off, and tests clean up the groups they create. * refactor(streaming): pr-ready simplify pass on the streaming grant Collapse the streaming permission helpers onto assert_can/can_access, return an empty joinable list instead of 403, skip the permission resolve when streaming is off, and add a stream.start action key so the UI hides Stream (but keeps Join) for users without the write grant. * docs(streaming): pr-ready review-polish pass on the streaming grant Trim the 0152 migration docstring to a single summary line, matching 0150 and 0151. * docs(streaming): pr-ready humanizer pass on the streaming grant Plainer wording for the stream.start action key comment and the Permission Groups paragraph, which now says an own-only read shows streaming without the join. * feat(permissions): gate in-browser emulation behind a group permission Adds an emulation entity next to streaming. Read plays in the browser (EmulatorJS, Ruffle, js-dos, PICO-8, EasyRPG) and joins netplay rooms, write hosts them. Migration 0152 now backfills both entities onto every existing group. * fix(streaming): address Greptile review on PR 5185 - Pin the claimed container in the stream player, so a permission refresh that turns streaming off mid-game keeps save, load and disc swap until the session ends. - Empty the Join list when a refreshed config turns streaming off, and discard any joinable request still in flight. - Update the installPermissionsHydration doc to name every layout that calls it. * fix(migrations): renumber play permissions migration to 0153 after master's 0152 Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]> * chore(permissions): drop redundant PermEntity comments Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]> * refactor(streaming): drop the live config refresh on permission changes Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]> --------- Co-authored-by: Georges-Antoine Assi <[email protected]> Co-authored-by: Claude Opus 5.5 (1M context) <[email protected]>
Overview
Scan, enrich, browse and play your ROM collection from one beautiful & free self-hosted app. Metadata from 10+ providers, save sync across your devices, and support for over 400 platforms. RomM is a must-have for anyone who plays on emulators.
Features
- Play in your browser with EmulatorJS and RuffleRS, no setup required
- Keep saves and states in sync across your devices, with conflict resolution
- Scan and enrich your library with metadata from IGDB, Screenscraper, LaunchBox and MobyGames
- Fetch custom artwork from SteamGridDB and track your achievements from Retroachievements
- Metadata available for 400+ platforms, plus multi-disk games, DLCs, mods, hacks and manuals
- Apply romhacks and translations on the fly with the built-in ROM patcher
- Share your library with granular per-user permissions and OIDC single sign-on
- Official apps for Playnite, Android and CFWs
- Free forever: AGPL-3.0, no tracking, no paid features, and total control of your data
Installation
The easiest way to start is with the Quick Start Guide in the docs. If you're having trouble with setup, please review the page for troubleshooting steps.
Prefer a hosted deploy over wiring up the stack yourself?
Starting at $6.49/mo · Setup guide
Deployment and infrastructure support for this install is handled by Hostinger. Prices are indicative and may not reflect current offerings. Signups through the link above send a share of the revenue back to us, which helps fund the project.
Official apps

Playnite plugin
Effortlessly integrate your retro game collection into Playnite, the open-source game library manager that provides a unified interface for all of your games on PC.
Windows Desktop QR pairing
by @gantoine

Argosy
Sync your library, download games on demand and track your achievements, from a gamepad-first interface designed for Anbernic, Retroid Pocket, Odin, and similar devices.
Android Handhelds QR pairing Save sync
by @tmgast

Grout
A lightweight client for your favorite handheld custom firmwares*. Download games, box art and BIOS files wirelessly, and sync your saves automatically as you play.
Linux Handhelds Save sync
*Supports Allium, Batocera, Knulli, MinUI, muOS, NextUI, Onion, ROCKNIX, Spruce and TrimUI.
Community
Here are some cool projects maintained by members of our community. Please note that our team does not regularly review their source code.
Mobile and TV
- romm-ios-app: Native iOS app by @ilyas-hallak
- RomMulus: Android TV app with built-in emulator cores and save sync by @DEV-DUFORD
Desktop
- Freegosy: Cross-platform game manager with save sync by @abduznik
- RetroVault: Native macOS library and player by @kennethreitz
- romm-client: Desktop client by @chaun14
- RomMate: Desktop app for browsing your collection by @brenoprata10
Handhelds and Steam Deck
- Gameflow Deck: Controller-first frontend for handhelds by @simeonradivoev
- RomMix: Big Picture-style frontend for Linux and Steam Deck by @leclercb
- Tender: Decky Loader plugin with library and save sync for Steam Deck by @danielcopper
- Vita RomM: PS Vita homebrew client for browsing and downloading games by @denkacn
Sync
- RetroArch Sync: Sync RetroArch library with RomM by @Covin90
- Syncthing sync: Small tool to push a Syncthing library to RomM by @amn-96
Integrations
- GGRequestz: Game discovery and request tool by @XTREEMMAK
- romm-comm: Discord bot by @idio-sync
Support the project
Consider supporting this project on Open Collective. Funds cover hosting, development, and maintenance, and we pass some along to community projects to nurture a healthy ecosystem of apps.
Our Friends
Here are a few projects that we think you might like:
- Lutris: Open gaming platform for Linux
- Cocoon: Controller-first Android frontend for retro handhelds
- muOS: Custom firmware for Anbernic and other handhelds
- RetroDECK: Retro gaming on SteamOS and Linux
- Steam ROM Manager: An app for managing ROMs in Steam
- Hasheous: Hash lookup service that maps ROMs to game metadata
- Gaseous: Another ROM manager with web-based emulator
- Playmatch: Microservice for matching ROM hashes to games
- EmulatorJS: An embeddable, browser-based emulator
- PortMaster: Native game ports for Linux handhelds
- MelonLoader: Universal mod loader for Unity games
- NextUI: MinUI-based custom firmware for TrimUI handhelds
- RetroAchievements: Achievements for retro games
Supported By
These companies support us by providing their tools for free:

