What is OpenSave?

OpenSave keeps your game progress synchronized across every computer and handheld you own. It automatically locates save folders for over 20,000 titles from Steam, emulators, store launchers, and repack releases. When a game writes a file, only the altered data chunks move to your other machines — either directly on the same network or via a relay you control. Each change becomes a numbered snapshot, letting you restore an entire save or just one file, and even maintain separate playthroughs on different branches. When two devices edit the same save offline, the software spots the divergence using shared history and asks which version to preserve. You can also mirror snapshots to cloud storage providers or a local NAS. The program is a single Go executable with a built-in interface, plus a headless daemon and CLI for servers. All information stays in a local SQLite database and snapshot archives. The relay is stateless, keeps no data, and since version 2.4.0 forwards only end-to-end encrypted traffic.

Should you self-host OpenSave?

OpenSave scores 52/100 on selfhost.directory (how scoring works) and ranks #26 of 62 in Game Servers. It has 241 GitHub stars.

It shipped 4 stable releases in the past year. The latest, v2.4.1, came out on 2 October 2026. New versions land roughly every 2 days.

Setup is moderate: expect some configuration beyond a single command. It is MIT-licensed and written mostly in Go.

Its closest alternative on selfhost.directory is Hoard (48/100, 194 stars). OpenSave scores higher overall. See OpenSave vs Hoard side by side.

Features

Activity timeline
Auto-detection of 20,000+ games
Block-level delta sync
Conflict detection by sync lineage
Cross-device game matching
Desktop notifications
End-to-end encryption over relay
Exclude patterns per game
Flatpak for Steam Deck
Headless daemon and CLI
In-app Updates
Optional cloud backup
Peer-to-peer save synchronization
Self-hostable relay server
Snapshot history with rollback

FAQ

Can I use it without a GUI?

Yes. The headless daemon + opensave-cli covers scan, add, status, snapshot, rollback, branch, and checkout — ideal for servers, NAS boxes, and scripts.

Does it work on Steam Deck?

Yes. There's an official Flatpak that runs on stock SteamOS in Desktop Mode. It automatically finds saves inside Proton prefixes along with native Linux and emulator saves.

Is my data encrypted in transit?

Over the relay, yes — end to end as of v2.4.0: save data is sealed with a key derived from the two devices' own keys when they paired. LAN sync is direct and not encrypted.

Can old (JS) and new (Go) versions talk to each other?

Yes, during the transition. They share the same wire protocol and your data migrates automatically.

Does it work with non-Steam or emulated games?

Yes. If it writes a save to disk, OpenSave can track it — Steam, emulators, GOG, Epic, and repacks are auto-detected; anything else you can add by path.

What if two devices change the same save while offline?

OpenSave detects the divergence by sync lineage and asks you to keep yours, theirs, or both on a new branch. It never silently overwrites.

Is it really free?

Yes — free and MIT-licensed open source. No pro tier, no subscription, no ads, no telemetry.

Do I need a server or an account?

No. Devices sync directly with each other. The optional relay only matters for syncing across the internet, and you can self-host it with a single binary.