RomM

Overview

RomM is a self-hosted manager for people who play games through emulators and want to organize, enrich and play a ROM collection. Its strongest case is for players who value a broad, connected library more than a ready-hosted service; running it yourself is part of the choice.

It combines cataloguing with browser play, cross-device save syncing and tools for handheld and desktop setups. The free, AGPL-3.0-licensed project says it has no tracking or paid features and leaves control of data with users.

For other options, browse Game Library Managers and ROM Management Software.

Key features

Collection enrichment

RomM can scan a collection and draw metadata from IGDB, ScreenScraper, LaunchBox and MobyGames, while SteamGridDB supplies custom artwork. Metadata editing lets users refine entries rather than accept catalog matches as final. The project says it covers more than 400 platforms, including multi-disk games, DLC, mods, hacks and manuals—a useful reach for varied libraries, but potentially more machinery than a small collection needs.

A built-in patcher applies ROM hacks and translations on the fly, and RetroAchievements support tracks achievements. These features make RomM more than a file index for players who actively customize or revisit older games.

Playing and syncing

Browser play through EmulatorJS and Ruffle needs no additional setup. Saves and states sync across devices with conflict resolution, and the feature set includes offline mode and controller support. That combination suits players who move between devices, though RomM's self-hosted nature means it is not a turnkey hosted library.

Access and integrations

Granular per-user permissions and OIDC single sign-on give the project options for controlling access. Integrations include ES-DE and Pegasus exports, LaunchBox import, community apps and a REST API. Official clients include a Windows Playnite plugin, Argosy for Android handhelds and Grout for Linux handhelds.

The native iOS app is community-made, not an official client. RomM's team says it does not regularly review community project source code, so iOS users should weigh that distinction before relying on the app.

Pricing

RomM costs nothing and is free forever under the AGPL-3.0 license, with no paid features. There are no paid tiers to trade against one another: users get the free project rather than a reduced-feature entry plan. The trade-off is its self-hosted approach, not a subscription or plan cap.

Platforms

RomM lists Android, iOS, Linux, Windows, web, API and self-hosted support. Its official client selection targets Windows Playnite and Android and Linux handhelds; the iOS app is a community project. More than 400 supported platforms refers to game systems represented in collections, not the operating systems on which RomM runs.

Who it's for

RomM is best suited to emulator players with a collection large or varied enough to benefit from metadata, artwork, patching and achievement tracking, especially those who want saves to follow them across devices. It is also a fit for users who want access controls, integrations or a self-hosted library. Readers seeking a hosted service that avoids self-management, or who want an officially maintained iOS client, should look elsewhere.

Pros and cons

• Pros: Free forever, with no paid features, and AGPL-3.0 licensed.
• Pros: Broad metadata, artwork and platform coverage, plus support for extras such as manuals, mods and multi-disk games.
• Pros: Browser play, cross-device save and state syncing with conflict resolution, offline mode and controller support.
• Cons: Self-hosting is a poor fit for readers who want a hosted, ready-to-use library.
• Cons: The iOS client is community-made, and the project does not regularly review community app source code.

Alternatives

RetroArch is another free option for readers who want an open-source project spanning Android, iOS, Linux, macOS, web and Windows; RomM is the more collection-focused choice based on its scanning, enrichment and management features.

ES-DE Frontend suits readers looking for a frontend on Android, Linux, macOS or Windows, with its desktop versions free to use and open source; Android is a paid app.

Pegasus Frontend is worth considering for a free, open-source option with no ads or in-app purchases on Android, Linux, macOS and Windows.

Yamata Launcher offers a free, MIT-licensed alternative for Android, Linux, macOS and Windows.

Gaseous is another free, open-source, AGPL-3.0 self-hosted server for Linux, web and Windows, and is the closer alternative for readers comparing self-hosted libraries.

Heroic Games Launcher is a free, GPLv3-licensed choice for Linux, macOS and Windows.

LaunchBox may suit Windows and Android users who want a free starter tier on Windows or are willing to pay for a Windows license. The Windows starter tier is free forever; the regular tier costs $30, paid once.

Verdict

Choose RomM if you want a free, self-hosted home for a substantial emulator collection, with rich metadata, multiple ways to play and saves that sync across devices. Its breadth is the main reason to choose it; the need to self-host—and the community status of its iOS app—are the clearest reasons to look elsewhere.