this post was submitted on 29 Jan 2026
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from the team:
When thinking about how Proton Drive apps interact with our backend, our goal was to deliver faster, more reliable file operations across all platforms.
So today, we wanted to share a progress update on the Proton Drive SDK and what it unlocks next.
Behind the scenes, the SDK now powers core file operations across all Proton Drive apps - Windows, macOS, Android, iOS, and web - giving us a shared, more robust foundation instead of separate implementations per platform.
Improvements
By rebuilding Drive’s most performance-intensive code in the SDK, we’ve already delivered major gains: up to 60% faster uploads on iOS, and up to 30% faster uploads and 70% faster downloads on web, with better reliability on unstable networks.
Support
What does the SDK support right now? Currently, it supports core file operations such as uploading and downloading, creating folders, renaming and moving items, and deleting or restoring files. Authentication and Proton-specific modules aren’t supported yet, so it’s best suited for contributors and early experimentation.
CLI
To cover workflows not yet supported by the SDK, we’re also building CLI tools. These will let you run common Drive commands and build on top of them without reverse-engineering Proton Drive. We’re aiming to release these next quarter.
What's Next?
Looking ahead to 2026, we’ll migrate all existing Drive features to the SDK and build new ones on top of it — including faster encryption with hardware acceleration, expanded SDK capabilities, a clearer integration path, and a Linux client.
Read the full update: https://proton.me/blog/drive-sdk-january-2026
Stay safe,
Proton team
I hope a Linux client actually happens, and isn't pushed back even further. I've been with Proton since their beta test days, and I just want Proton Drive on Linux. :(
Linux it is a top voted feature of all https://protonmail.uservoice.com/forums/932839-proton-drive/filters/top , so is will happen sooner or later
I'm currently using Koofr which provides seamless backup between devices. I'm sure it may not be as secure as Proton Drive but it works so well. Proton Drive support for Linux is a big want for me.
No Linux support, thanks for the awesome news. /s
You need to return back to school to learn reading (or using "Ctrl+F"). They mention "Looking ahead to 2026, we’ll ... build new ones on top of it — including ... Linux client."
Fingers crossed, it is a top requested Drive feature.
I'm kind of curious as to what I could do with Proton Drive SDK.
It will allow people to build clients to sync to and from Drive. At least that is the primary thing I see.
Would also allow people to build clients to view the files.
Now I think there's a fair argument they should just make that, and maybe they will because this work seems to be necessary anyway to make that happen to some degree, but only time will tell.
Good stuff, hope further performance upgrades will continue to be made so that it becomes a more valid photo backup option in the future. So far I’ve had to go with self-hosting Immich which while great is certainly not the most convenient solution for most at least.