File Storage & Sync
Open-source file storage and sync services
5 of the 17 file storage and sync services in this directory are open source, according to their own sites.
All of them are free or have a free plan.
Listings checked up to Oct 5, 2026 · Where the facts come from
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| Proton DriveEnd-to-end encrypted cloud storage from the maker of Proton Mail | Free plan · from $3.99/mo | Yes | Web, macOS, Windows, iOS, Android |
| NextcloudOpen source, self-hosted file sync and collaboration platform | Free plan · from €71.29/yr | Yes | Web, macOS, Windows, Linux, iOS, Android |
| SyncthingFree, open source file sync directly between your own devices | Free | Free | macOS, Windows, Linux |
| InternxtOpen source, zero-knowledge cloud storage with lifetime plans | Free plan · from $11.99/mo | Yes | Web, macOS, Windows, Linux, iOS, Android |
| FilenEnd-to-end encrypted cloud storage from Germany with open source apps | Free plan · from €11.99/yr | Yes | Web, macOS, Windows, Linux, iOS, Android |
Common questions
Which file storage and sync services are open source?
5 of the 17 file storage and sync services in this directory are open source, according to their own sites. They are Proton Drive, Nextcloud, Syncthing, Internxt and Filen.
When was this checked?
Every listing on this page was checked on Oct 5, 2026, against the pages it cites. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and each listing names the pages it was read from.