Active users on a single machine. Strategy C: Versioned Configuration Backup (For Power Users) Tool: Git (yes, for portable apps).

For apps without relocation tools: Use a symlink.

1. The Premise: Why Portable Apps Change the Backup Game Unlike traditional installed software, portable apps are designed to live outside the operating system’s registry and protected folders. They reside on a USB drive, external SSD, or a synced cloud folder. The promise is zero footprint and total mobility.

Can’t incrementally sync inside the container without remounting. Works best with differential backup tools (e.g., Duplicati, Borg). 5. The Restore Drill: Why Most Backups Fail You’ve backed up. Now simulate a disaster: your USB drive dies.

On Windows:

Monthly archival snapshots. Strategy B: The Delta-Sync with Exclusions (For Daily Use) Tool: FreeFileSync, Robocopy (Windows), rsync (Linux/macOS). Rule set example (Robocopy):

| Layer | Content | Why It Matters | |-------|---------|----------------| | | .exe , .app , .jar , .py files | The engines themselves. Re-downloadable but time-consuming to re-collect. | | Configuration State | Data/ , Settings/ , Profile/ , .ini , .conf , prefs.js | The real value. Hotkeys, UI layouts, plugin states, recent file lists. | | User Data | Notes, project files, saved sessions, databases | Irreplaceable. Often mixed inside app folders (e.g., Keepass.kdbx , Notepad++\backup ). |

cd /media/portable/Apps git init echo "Cache/" >> .gitignore echo "*.log" >> .gitignore git add . git commit -m "Portable env state" You can roll back a corrupted config file to last week. You can push to a private remote repo. Cons: Not for binaries >100MB. Git isn’t ideal for large executables.