Cryptomator encrypts your data quickly and easily. Afterwards you upload them protected to a cloud service.
Reviewed by Gabriel Bachmann
Cryptomator
cryptomator.org 5.0 (8)
Rate Cryptomator: No account needed
Threat level
Hardened
A hardened pick. Worth the effort once you have chosen to shrink your footprint on purpose. Enough for most people. Threat levels
Our take
If your files live in Dropbox, Google Drive, or iCloud and you want them encrypted before they sync, this is the cleanest answer, with transparent per-file encryption and apps on every platform. The honest limit is that filename and folder-structure protection has edges, and mobile access on the paid apps is its own consideration. Ideal for adding zero-knowledge to a cloud you already use; not a replacement for whole-disk encryption.
GitHub at a glance
cryptomator/cryptomator GPL-3.0 cloud-storagecryptocryptographycryptomatorencryptionjavaprivacysecurity
Stars
16,441
+70 this week
Forks
1,500
190 watching
Last commit
today
healthy
Latest release
1.19.6
4d ago, 100+ total
Star history
Issues
90% closed
256
open
2,204
closed
+7 / -23
opened / closed, last 4 weeks
Opened vs closed, last 12 weeks
Commits, last 26 weeks
132 commits, active 19 of 26 weeks
71 contributors since Feb 2014
Languages
- Java 94.2%
- CSS 5.7%
- FreeMarker 0.1%
Updated daily from the GitHub API. Star tracking since Jun 10, 2026.
Website at a glance
cryptomator.org
A+ score 100
Strong website security headers
Graded by Mozilla HTTP Observatory, tested 4d ago
Inspect this site yourself
Measures the security configuration of the tool's own website, not the privacy of the product itself. A strong tool can still score low here.
Cryptomator alternatives
PrivacyNotes Encrypted notes, tasks, calendar, files, passwords and a journal with mood and medication tracking, all unlocked by one 12-word recovery phrase. Sign up with no email and no password. Open source.
7-Zip File archiver with a high compression ratio and built-in encryption functionality.
FileVault FileVault is the built-in full-disk encryption feature in macOS. On Macs with Apple silicon or a T2 chip, data is encrypted by hardware by default; enabling FileVault adds a login-password gate that prevents decryption without your credentials.
BitLocker BitLocker is the built-in full-disk encryption feature in Windows Pro, Enterprise, and Education editions. It encrypts the operating system drive and fixed data drives using AES-XTS, with optional TPM-backed pre-boot authentication.
VERNAM A free, fully client-side file encryptor that runs in your browser. Drop in any file, set or generate a passphrase, and it seals the result into its own .vrn format. Nothing is ever uploaded, and it works offline.
VeraCrypt It can create a virtual encrypted disk that works just like a regular disk but within a file. It can also encrypt a partition or the entire storage device with pre-boot…
Cryptomator license, in plain English
GPL-3.0 Strong copyleft
Free to use and modify, but anything you distribute that is built on it must also be open under the same license.
Permits
- Commercial use
- Modification
- Distribution
- Patent use
- Private use
Requires
- Disclose source
- Same license
- State changes
- License and copyright notice
Does not provide
- Liability cover
- Warranty
Why it matters: Strong copyleft keeps every distributed version open. A vendor cannot fold this into a closed product and ship it without releasing their changes.
Plain-language summary of the project's license, not legal advice. Read the full text for the exact terms.