MASGAU has been discontinued. Similar apps include Hoard, which is free and open source. Other options are Game Backup Monitor, The Game Saver and SLSK (Steam Linux Swiss Knife). In total there are four Online Backup Tools like MASGAU for Windows, Linux, self-hosting and Mac.
Hoard is an open-source game save manager and backup tool for Windows, Linux, macOS, and Steam Deck. It automatically detects supported games, monitors save files, and creates versioned snapshots after you play.
Spain
EU
Game Backup Monitor is a simple, but flexible application that detects games as you play them. Once you finish playing a game, a backup of the saved games will be made automatically using 7-Zip compression.
Canada
Small portable Windows tool called Game Saver that lets you back up any game’s save folder to a USB drive and restore it later on any PC.
ItalyEU
A manager that can backup/restore game saves, game configs and entire games. It relies on a community-maintained database containing information on the save and config paths of various Linux Steam games.
