Filen
End-to-end encrypted cloud storage and file sharing from Germany.
Alternatives · 2026
Open-source client-side encryption for cloud storage files.
6 hand-curated alternatives from MintedSaaS's directory. See the Cryptomator listing →
Cryptomator is an open-source desktop application that encrypts files on your machine before uploading them to cloud storage services like Dropbox, Google Drive, OneDrive, or S3-compatible backends. It's built on zero-knowledge principles—your encryption keys stay local, and the cloud provider never sees unencrypted content. Users range from freelancers protecting client files to organizations managing sensitive documents where compliance requires client-side encryption.
The typical workflow involves mounting a Cryptomator vault as a virtual drive, dragging files into it, and watching them sync encrypted to whichever cloud service you've already picked. It's particularly common among people who don't want to switch storage providers entirely but need stronger privacy than their cloud vendor offers. You'll see it used by journalists, legal professionals, and anyone working with regulated data who wants to keep their existing storage setup while adding an encryption layer.
End-to-end encrypted cloud storage and file sharing from Germany.
Open-source-friendly end-to-end encrypted cloud storage.
Zero-knowledge cloud storage and file sharing from Canada.
End-to-end encrypted cloud storage with a generous free tier.
End-to-end encrypted cloud storage from the Proton team.
Zero-knowledge encrypted file sharing for businesses.
Filen, Internxt, Sync.com, MEGA, Proton Drive, and Tresorit all offer client-side encryption, but they differ significantly: Filen and Internxt are standalone encrypted storage services with free tiers, Sync.com focuses on small-team file sync, MEGA and Proton Drive bundle encryption with large storage allotments, and Tresorit targets enterprise compliance. Your choice depends on whether you need to encrypt files already in another cloud service or prefer a single integrated platform.
Yes. Cryptomator itself is free and open-source. Among the alternatives, Filen offers 10 GB free, Internxt offers 10 GB free, Sync.com offers 5 GB free, and MEGA offers 20 GB free with encryption included. Proton Drive and Tresorit require paid plans. If you only need encryption on top of existing cloud storage, Cryptomator's free version has no storage limits.
Cryptomator lets you keep your current Dropbox or Google Drive account and layer encryption on top without migrating. If you're willing to switch providers entirely, an alternative like Sync.com, MEGA, or Proton Drive handles encryption natively and may feel simpler because there's no separate encryption layer. Cryptomator works better for hybrid setups; all-in-one services work better if you want a single encrypted ecosystem.
All six alternatives run on Windows and macOS. Filen, Internxt, Sync.com, MEGA, and Proton Drive all offer iOS and Android apps. Tresorit also supports mobile. Cryptomator itself supports Windows, macOS, Linux, iOS, and Android, so platform coverage is comparable across the category.
Yes, but the mechanics differ. Cryptomator requires the recipient to also install Cryptomator and mount the vault. Sync.com, MEGA, Proton Drive, and Tresorit let you generate shareable encrypted links without requiring recipients to have the software. Filen and Internxt also support sharing via links.
Use an encryption layer like Cryptomator if you already have cloud storage you like and want to minimize switching costs. Choose a built-in service like Sync.com or Proton Drive if you're starting fresh, want a simpler setup, or need native sharing and collaboration features. Built-in services typically require less technical knowledge.
MEGA offers 20 GB free with full encryption. Filen and Internxt each offer 10 GB. Sync.com offers 5 GB. Proton Drive's free tier is 5 GB. Tresorit does not offer a free tier.
Cryptomator supports any S3-compatible backend and lets you point at your own infrastructure. Tresorit can be configured to sync to on-premises systems in enterprise deployments. Sync.com, Filen, Internxt, MEGA, and Proton Drive are closed storage ecosystems and don't support custom backends.