GSBS

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

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About

GSBS is a free game-save synchronization and backup service for Windows, Linux, and macOS devices, organized around a central server and client applications. Clients detect supported running games and wait until they close before syncing. They scan Steam, Epic, GOG, Ubisoft, EA, Xbox, Heroic, Lutris, Bottles, and Prism against a PCGamingWiki manifest, and translate save paths across Windows and Linux, including Proton paths. Save files are versioned and can be restored through the web dashboard. Optional end-to-end encryption uses client-side AES-256-GCM with Argon2id; without it, saves remain plaintext on the server and in backups. Scheduled tar.zst snapshots can include the database, keys, and saves, stored on local disk or S3. GSBS also supports webhook, Discord, and ntfy alerts for events including conflicts, quota, backups, new devices, and stale devices. The project recommends Docker Compose for server deployment and provides a Windows server setup executable. Clients are available for Windows, Linux, and macOS, and the project uses the MIT License.

Who it is for

GSBS suits multi-user, multi-device setups spanning desktop, laptop, or Steam Deck clients. It is relevant for players who want game-aware syncing, version history, and optional encrypted saves.

What is good

Defers syncing until detected games close.
Translates save paths across Windows and Linux.
Versioned saves can be restored from the web dashboard.
Scheduled snapshots can be stored on local disk or S3.
Provides an OpenAPI specification at /api/openapi.json.

What to know first

Saves are plaintext on the server unless encryption is enabled.
Installers and binaries are not code-signed or notarized.
Server setup is recommended through Docker Compose.

Verdict

GSBS pairs game-aware syncing with versioned saves, scheduled backups, and a web restore workflow. Enable optional end-to-end encryption if save contents should not remain plaintext on the server or in backups.

Compared on game save managers

Free plan: Yesgithub.com
Automatic backup: Yesgithub.com
Cloud synchronization: Yesgithub.com
Scheduled backups: Yesgithub.com
Version history: Yesgithub.com
Game detection: automaticgithub.com
Supported platforms: multi-platformgithub.com
Restore options: manualgithub.com

Facts

Purpose: GSBS syncs and backs up game saves across Windows, Linux, and macOS devices through a central server and clients.github.com · 28 Sept 2026
Game-aware sync: Clients detect running games and defer syncing until the game is closed.github.com · 28 Sept 2026
Game discovery: The client scans Steam, Epic, GOG, Ubisoft, EA, Xbox, Heroic, Lutris, Bottles, and Prism against a PCGamingWiki manifest.github.com · 28 Sept 2026
Cross-platform paths: GSBS translates save paths across Windows and Linux, including Proton paths.github.com · 28 Sept 2026
Restore: Save files are versioned, and users can restore files from the web dashboard.github.com · 28 Sept 2026
Encryption: Optional end-to-end encryption uses client-side AES-256-GCM with Argon2id, so the server sees ciphertext for encrypted saves.github.com · 28 Sept 2026
Backups: Scheduled tar.zst snapshots can include the database, keys, and saves and be stored on local disk or S3.github.com · 28 Sept 2026
Integrations: GSBS can send webhook, Discord, and ntfy notifications, and supports S3 for offsite backups.github.com · 28 Sept 2026
API: The web UI provides an OpenAPI specification at /api/openapi.json.github.com · 28 Sept 2026
Deployment: The project recommends Docker Compose for the server and provides a Windows server setup executable.github.com · 28 Sept 2026
Client platforms: Clients are available for Windows, Linux including Flatpak and arm64, and macOS.github.com · 28 Sept 2026
Security limitation: Save contents are plaintext on the server and in its backups unless optional end-to-end encryption is enabled.github.com · 28 Sept 2026
Security reporting: The security policy asks users to report vulnerabilities privately to the maintainer and says reports are acknowledged within 72 hours.github.com · 28 Sept 2026
License: The project is distributed under the MIT License.github.com · 28 Sept 2026
Purpose: GSBS syncs game saves across Windows, Linux, and macOS using a central server and clients installed on each PC.github.com · 29 Sept 2026
Audience: It supports multi-user, multi-device setups, including desktop, laptop, and Steam Deck clients.github.com · 29 Sept 2026
Game discovery: The client scans Steam, Epic, GOG, Ubisoft, EA, Xbox, Heroic, Lutris, Bottles, and Prism against a PCGamingWiki manifest.github.com · 29 Sept 2026
Sync behavior: GSBS detects running games and defers syncing until they quit, to avoid touching a live save.github.com · 29 Sept 2026
History and restore: Save files are versioned and can be restored from the web dashboard.github.com · 29 Sept 2026
Backups: Scheduled tar.zst snapshots can include the database, keys, and saves, and be stored locally or in S3; the server provides a restore command.github.com · 29 Sept 2026
Encryption: Optional end-to-end encryption uses client-side AES-256-GCM with an Argon2id key derivation, so the server sees ciphertext when enabled.github.com · 29 Sept 2026
Notifications: Webhook, Discord, and ntfy alerts cover conflicts, quota, new devices, backups, and stale devices.github.com · 29 Sept 2026
API: The web UI provides an OpenAPI specification at /api/openapi.json.github.com · 29 Sept 2026
Deployment: The maker recommends Docker Compose for the server and also documents pre-built Docker images and Linux or Windows server binaries.github.com · 29 Sept 2026
Security reporting: The security policy asks users to report vulnerabilities privately to the maintainer and says reports are aimed to be acknowledged within 72 hours.github.com · 29 Sept 2026
Security limits: Installers and binaries are not code-signed or notarized, and save content is protected only when optional end-to-end encryption is enabled.github.com · 29 Sept 2026
License: The repository identifies GSBS as MIT licensed.github.com · 29 Sept 2026