Sync to Proton Drive?

[SyncLS]

Hi,

I just donated & downloaded FreeFileSync. I'm trying to figure everything out but, I'm wondering if there is a way to sync with Proton Drive?

I suppose I could simply sync with Google Drive and then copy that over to Proton Drive, but that would not be my preference.

Any help is appreciated.

Tony

[xCSxXenon]

There is no native integration but if your Proton Drive can be accessed via File Explorer, you should be able to use it in FFS

[SyncLS]

Proton Drive is accessible via Windows File Explorer.

[xCSxXenon]

Add it as a location in FFS

[John1234]

Here is the Download link for Proton Drive Software.

https://protonapps.com/

Install this and you can use FFS.

[PatHightree]

Proton is putting together a javascript + C# SDK that they will be using as the cross-platform basis for their products going forward. This SDK will include support for Proton Drive.
I am hopeful that we might have Proton support in FreeFileSync in the future.

Here are some related blog posts
https://proton.me/blog/proton-drive-sdk-preview
https://proton.me/blog/drive-roadmap-spring-2025

[John1234]

Proton Drive is a tricky one.
The Proton Drive software for Windows is designed to synchronize your files between your PC and your Proton Drive and I think if you try and use free file sync to copy the files to the Proton Drive has it appears on your computer it's merely going to put them in the sync folder on your computer and then they have to get synchronized up to the server through the proton client.

Supposedly everybody is waiting for a proton SDK to come out later this year. This is not the only form I've heard that on but I have yet to believe what I read until it actually appears.

There is support for mounting proton with rclone but it's buggy. The developer who created the proton code no longer updates it and there are issues that some people have so it's not something that can be reliably recommended.

Perhaps in 2027.

[PatHightree]

It sounds like they are serious on unifying their codebase, makes a lot of sense wrt multiple platforms. If this SDK is that unified foundation, that's good news as well. It means that the public-facing SDK is not some project they must maintain separately.
But as you say, let's see it get shipped first.

I heard about the rclone option, but as it was developed by reverse engineering, I already didn't have much faith in it. Hearing that the dev stopped maintaining it turns it into a non-starter. Thanks for the info.
I'll temper my aspirations and work with the web frontend for the time being.

[PatHightree]

An official announcement has been made : https://proton.me/blog/drive-sdk-january-2026
The repo has had updates too, there's c# and kotlin code available.
However, there's no authentication yet. This release is meant for experimentation, not production.

[John1234]

It will be fall of this year before they release anything production and then people need to code after that so I wouldn't expect any apps to support the proton API until 2027.

[PatHightree]

Aha, that sounds logical. I'll stop pestering you then ;)