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Tomb vs OpenZFS: catalog facts
Tomb	OpenZFS
Free Free and open source.	Free Free and open source.
Linux, Command line	Linux, Command line
Short, memorable commands for creating and opening encrypted volumes Keys are kept in separate files that can be stored apart from the data	Native per-dataset encryption Filesystem and volume management in one tool
Linux only Command line only, with no graphical interface	Command-line administration with a learning curve More than most single-disk desktop users need
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.