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SQuirreL SQL vs Valentina Studio: catalog facts
SQuirreL SQL	Valentina Studio
Free Free and open source.	Freemium Valentina Studio FREE costs nothing; Valentina Studio PRO is a paid upgrade.
Windows, macOS, Linux	Windows, macOS, Linux
Works with any JDBC-compliant database Plugin system for extra features	Supports SQL and NoSQL databases in one app Visual diagram editor that generates schema objects
Requires a Java runtime Interface feels dated next to newer clients	Some features reserved for the paid PRO edition Not open source
Downloadable app	Downloadable app
Open source	Closed source
License: LGPL-2.1	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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