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SPECIFICTION
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GSM

github.com

Free plan WindowsLinux
Visit github.com
Spec score 7.6 #16 of 27 in Game Save Managers

What it is

GSM is free, open-source software for versioned game-save backups on Linux and Windows. It uploads backup sets to cloud storage, synchronizes the library between machines, and restores saves when needed. Ludusavi provides automatic game-save detection, while manual backup is available for games that are not detected. Rclone handles cloud uploads, and GSM creates SHA256 integrity files for each backup. Retention can be configured separately for each game. Restore choices include the newest backup, every stored backup, or the newest backup for one selected game. The project is designed for a shared Linux and Windows library without one system corrupting or deleting the other side's data. Linux distributions include graphical and text interfaces plus AppImage support. Windows offers a graphical build and a single-file EXE. GSM uses Rclone's copy command for cloud operations. The repository uses the MIT License, and its releases page lists “GSM - Definitive edition.”

Spec sheet

Purpose
GSM creates versioned backups of game saves, uploads them to cloud storage, synchronizes the backup library between machines, and restores saves when needed.Read 7 Oct 2026 · github.com
License
The repository is published under the MIT License.Read 7 Oct 2026 · github.com
Automatic detection
It uses Ludusavi for automatic game save detection.Read 7 Oct 2026 · github.com
Backup integrity
It creates SHA256 integrity files for backups.Read 7 Oct 2026 · github.com
Cloud uploads
It uses Rclone to upload backups to cloud storage.Read 7 Oct 2026 · github.com
Cross-platform behavior
The project says it is designed to work across Linux and Windows without one side corrupting or deleting the other.Read 7 Oct 2026 · github.com
Linux interfaces
It offers a Linux GUI and TUI, plus AppImage support.Read 7 Oct 2026 · github.com
Manual backups
It supports manual backups for games it does not detect automatically.Read 7 Oct 2026 · github.com
Release
The GitHub releases page lists a release titled “GSM - Definitive edition.”Read 7 Oct 2026 · github.com
Restore options
It can restore the latest backup, all backups, or the latest backup for a specific game.Read 7 Oct 2026 · github.com
Retention
Backup retention can be set per game.Read 7 Oct 2026 · github.com
Safety behavior
GSM uses the rclone copy command for its cloud operation.Read 7 Oct 2026 · github.com
Windows distribution
It offers a Windows GUI and a single-file EXE build.Read 7 Oct 2026 · github.com

Plans and prices

GSM Free Free and open source Read 7 Oct 2026 · github.com

Every GSM plan and price →

Strong points and limits

Strong points

  • Free and open source
  • Automatic detection through Ludusavi
  • Cloud uploads through Rclone
  • SHA256 integrity files
  • Linux and Windows interfaces

Limits

  • Requires separate cloud storage through Rclone
  • Automatic detection may miss some games
  • Supports Linux and Windows only

Who it suits

It suits Linux and Windows players who want cloud-synchronized, versioned save backups with automatic detection and per-game retention. Manual backup support helps cover games outside automatic detection.

Verdict

GSM provides a focused save-backup workflow with version history, integrity files, and cross-platform synchronization. Its platform scope and reliance on Rclone are the key setup considerations.

Where Specifiction places it

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