Wrapper of syncthing for Android.
Is syncing your only goal? Then I'd suggest Syncthing (https://syncthing.net/). It uses the file system of your device and syncs it across multiple devices.
NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.
What are some of the best ways to transfer files from your PC to the Deck?
1 project | reddit.com/r/SteamDeck | 3 Jul 2022
Start Syncthing Automatically on SteamDeck. Even in Game Mode. (No Root Needed)
1 project | reddit.com/r/SteamDeck | 30 Jun 2022
Welche Software für wöchentliches Backup?
1 project | reddit.com/r/de_EDV | 30 Jun 2022
SMB server on ubuntu can be redundant ?
1 project | reddit.com/r/linux4noobs | 28 Jun 2022
Backing up Save Data in game mode?
1 project | reddit.com/r/SteamDeck | 27 Jun 2022