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sqldef vs Skeema: catalog facts
sqldef	Skeema
Free Free and open source under the MIT and Apache 2.0 licences.	Freemium The CLI is open source and free; the site also offers additional commercial products.
Windows, macOS, Linux, Command line	Command line
Declarative schema in plain SQL Idempotent: only needed changes are applied	Declarative schema changes without hand-written migrations Configurable linter rules for safety and policy
Command line only Declarative diffs need care with destructive changes	Only supports MySQL and MariaDB Some features are part of separate commercial products
Downloadable app	Downloadable app
Open source	Open source
License: MIT, Apache-2.0	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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