Cryptomator is provided free of charge as an open-source project despite the high development effort and is therefore dependent on donations. If you are also interested in further development, we offer you the opportunity to support us:
- One-time or recurring donation via Cryptomator's website.
- Become a sponsor via Cryptomator's sponsors website.
Cryptomator offers multi-platform transparent client-side encryption of your files in the cloud.
Download native binaries of Cryptomator on cryptomator.org or clone and build Cryptomator using Maven (instructions below).
- Works with Dropbox, Google Drive, OneDrive, MEGA, pCloud, ownCloud, Nextcloud and any other cloud storage service which synchronizes with a local directory
- Open Source means: No backdoors, control is better than trust
- Client-side: No accounts, no data shared with any online service
- Totally transparent: Just work on the virtual drive as if it were a USB flash drive
- AES encryption with 256-bit key length
- File names get encrypted
- Folder structure gets obfuscated
- Use as many vaults in your Dropbox as you want, each having individual passwords
- Three thousand commits for the security of your data!!
- 256-bit keys (unlimited strength policy bundled with native binaries)
- Scrypt key derivation
- Cryptographically secure random numbers for salts, IVs and the masterkey of course
- Sensitive data is wiped from the heap asap
- Lightweight: Complexity kills security
- HMAC over file contents to recognize changed ciphertext before decryption
- I/O operations are transactional and atomic, if the filesystems support it
- Each file contains all information needed for decryption (except for the key of course), no common metadata means no SPOF
For more information on the security details visit cryptomator.org.
- JDK 17 (e.g. temurin)
- Maven 3
- Optional: OS-dependent build tools for native packaging (see Windows, OS X, Linux)
mvn clean install # or mvn clean install -Pwindows # or mvn clean install -Pmac # or mvn clean install -Plinux
This will build all the jars and bundle them together with their OS-specific dependencies under
target. This can now be used to build native packages.
If you unzip the buildkit for your OS, you will find a launcher script with some basic settings. You might want to adjust these to your needs. To start Cryptomator, simply execute the launcher script from a terminal, e.g.
launcher-linux.sh, if you're on a Linux system.
This project is dual-licensed under the GPLv3 for FOSS projects as well as a commercial license for independent software vendors and resellers. If you want to modify this application under different conditions, feel free to contact our support team.