Filtered ranking
Best Open-Source Cloud Storage Services in 2026
4 of the 12 cloud storage services ranked on listme.name match: their source code is public under an open-source license. The order uses the same scores as the full ranking.
The ranking
- 1
Nextcloud
The only open-source service here, under AGPL, and it runs on a server you control. It asks more of you than the hosted services, because updates, backups and security fall to you unless you pay a provider.
Best for Self-hosted file sync for teams and privacy-minded users
WindowsmacOSLinuxAndroidiOSWebSelf-hostedFree and open sourceOpen source
- 2
Seafile
Open-source file sync you can run on your own server, with clients for Windows, macOS, Linux, iOS and Android. The server core is AGPL-3.0, and the company offers SeafilePlus Cloud as a paid hosted option.
Best for Teams that want self-hosted file sync
WindowsmacOSLinuxiOSAndroidSelf-hostedFree and open sourceOpen source
- 3
Internxt
End-to-end encrypted storage with post-quantum cryptography, 1 GB free, iOS and Android apps, and an AGPL-3.0 drive web client. Its free space is far smaller than Google Drive or MEGA, so it suits private files rather than large libraries.
Best for Private files that need end-to-end encryption
WebiOSAndroidFree plan, paid upgradesOpen source
- 4
Filen
Zero-knowledge encrypted storage with web, desktop, mobile and CLI apps, and open-source clients under AGPL-3.0. It mounts as a network drive on Windows, macOS and Linux, though its homepage does not state the free storage size.
Best for Developers and privacy users who want a network drive
WebWindowsmacOSLinuxCommand lineFree plan, paid upgradesOpen source
At a glance
| Product | Score | Price | Platforms | Free storage | Self-hosted |
|---|---|---|---|---|---|
 Nextcloud | 84.0 | Free and open source | WindowsmacOSLinuxAndroidiOSWebSelf-hosted | Set by your server | Yes |
 Seafile | 83.0 | Free and open source | WindowsmacOSLinuxiOSAndroidSelf-hosted | Depends on your own server | Yes |
 Internxt | 82.0 | Free plan, paid upgrades | WebiOSAndroid | 1 GB | No |
 Filen | 81.0 | Free plan, paid upgrades | WebWindowsmacOSLinuxCommand line | Free plan; size not stated on homepage | No |
