GSBS

Overview

GSBS is a self-hosted service for syncing and backing up game saves across Windows, Linux, and macOS. It is best suited to players who move between computers or use a Steam Deck alongside a desktop, and who are comfortable running a server. Its game-aware syncing and save history make it a more considered option than basic file copying, but setup and security choices remain the user’s responsibility.

Key features

Sync around active games

The clients discover games across Steam, Epic, GOG, Ubisoft, EA, Xbox, Heroic, Lutris, Bottles, and Prism by checking against a PCGamingWiki manifest. They wait until a detected game closes before syncing, avoiding changes to a save while the game is using it. Windows and Linux save paths are translated, including Proton paths, which is especially useful for mixed PC and Steam Deck setups.

Versioning and recovery

GSBS versions save files and lets users restore them manually through the web dashboard. That provides a practical way to recover an earlier save, while leaving the choice of version to the player rather than promising automatic rollback.

Encryption, backups, and alerts

Optional end-to-end encryption uses client-side AES-256-GCM with Argon2id, so encrypted saves reach the server as ciphertext. Without encryption, save contents are plaintext on the server and in backups; anyone storing them on a server or backup location they do not control should enable it.

Scheduled tar.zst snapshots can include the database, keys, and saves, and can be stored locally or in S3. Webhook, Discord, and ntfy notifications cover conflicts, quota, new devices, backups, and stale devices. The web UI also provides an OpenAPI specification at /api/openapi.json, useful for users integrating the service with their own tooling.

Pricing

GSBS is free, with no paid tiers or seat and quota terms to weigh. Its cost is operational rather than subscription-based: the recommended server deployment uses Docker Compose, and backups require local storage or an S3 destination that the user arranges.

Platforms

Clients are available for Windows, Linux (including Flatpak and arm64), and macOS. The server supports self-hosting, with Docker Compose recommended, and a Windows server setup executable is also provided. The combination covers desktop, laptop, and Steam Deck use, though running a central server is a requirement of the service model.

GSBS is distributed under the MIT License. Installers and binaries are not code-signed or notarized, a consideration for users who prefer signed software. The security policy asks vulnerability reports to be sent privately to the maintainer and says they will be acknowledged within 72 hours.

Who it's for

GSBS makes the most sense for players with several devices or operating systems who want syncing to respect active games, plus a recoverable history and scheduled backups. It is less suitable for someone seeking a hands-off hosted service: deployment, storage, and the decision to enable encryption sit with the user.

Pros and cons

• Pro: Game detection and deferred syncing reduce the chance of changing a live save.
• Pro: Cross-platform path translation, including Proton, serves mixed Windows and Linux setups.
• Pro: Versioned saves and manual dashboard restores offer a clear recovery path.
• Con: Save contents remain plaintext unless end-to-end encryption is enabled.
• Con: Self-hosting and arranging backup storage add setup and maintenance responsibilities.
• Con: Unsigned, unnotarized installers and binaries may be a drawback for security-conscious users.

Alternatives

Game Save Managers is a broader category to browse if you want to compare options before choosing a specific tool.

• Checkpoint64 is worth considering if you prefer a freemium service with a defined free allowance: its free plan has 20 MiB per space, one team, and limited team and read-only-fan access.
• EmuSync is another free option for Linux and Windows users who do not need macOS support.
• Game Backup Monitor may suit users who want an open-source Windows or Linux backup tool with unlimited games and 7-Zip compression; cloud use requires a provider and sync client.
• Game Save Genie is a free alternative for users who want to use their own cloud storage.
• Hoard is another freemium option for Linux, macOS, Windows, and self-hosted setups.
• Ludusavi is a free, MIT-licensed portable executable for Windows, Linux, or Mac.
• Game Save Manager is an alternative for Windows users, with a free GitHub installer under GPL-3.0.
• Gamekeeper is a Windows alternative whose free plan limits Multi-Space to three per game and supports several local and network storage types, including S3.

Verdict

Choose GSBS if you want game-aware syncing, cross-platform save paths, version history, and scheduled backups across your own devices, and are prepared to operate a central server. Its strongest reason to choose it is the combination of syncing safeguards and recoverable saves; its clearest reason to look elsewhere is the responsibility for deployment and data protection, particularly if you do not want to manage encryption and backup storage yourself.