SaveSync – A co-op save sync tool that uses Steam Workshop as a CDN

My friend and I were playing a co-op game where he was the host. He went to work, I stayed home sick, and I couldn't play our world because the save file lived on his machine. Most solutions are either paying $10/month for a dedicated server or manually zipping and DMing files back and forth.

I built SaveSync to automate this without the subscription model. Instead of building my own cloud backend, I’m leveraging the Steam Workshop API as a private storage layer.

The tool handles the encryption locally before uploading the saves as unlisted Workshop items, so they stay private to you and your friends. For games like Minecraft that aren't natively on Steam, I built a feature that tunnels the connection through Steam's network so friends can join each other as if they were on the same local network.

It’s a one-time purchase because I’m tired of everything being a subscription. I’m curious if anyone here has tried repurposing the Workshop API for data storage like this, or if you’ve run into specific issues with file conflicts in these kinds of sync setups.