Cryptomator

Open SourceGPL-3.0Self-Hosted, On-Premise

Cryptomator provides seamless client-side encryption for anyone using general-purpose cloud storage providers. It creates a virtual encrypted vault inside any cloud folder. Files placed inside the vault are transparently encrypted with AES-256 before being synced by the cloud provider. Cloud storage providers never see filenames, directory hierarchies, or file contents.

Open Source & Security Architecture

License	GPL-3.0
Source Repository	github.com/cryptomator/cryptomator
Deployment Model	Self-Hosted, On-Premise
Supported Platforms	WindowsmacOSLinuxiOSAndroid
Encryption at Rest	AES-256 (scrypt key derivation) / WebDAV / FUSE / Dokany
Encryption in Transit	Dependent on underlying sync provider
Zero-Knowledge Architecture	Yes (Client-side keys)
Code Audit & Integrity	Open Source Code Audited

Verified Capabilities

5 Key Features

Client-side AES-256 encryption with scrypt key derivation

Filename and directory structure obfuscation

Virtual drive integration via WebDAV, FUSE, or Dokany for seamless drag-and-drop

Fully open-source codebase licensed under the GPLv3

No account registration or cloud server dependencies required

Verified User Reviews & Ratings

Authentic community ratings calculated dynamically across security, workflow, and pricing.

4.9/ 5.0

Based on 0 verified reviews & research benchmarks

100%

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