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Sequel Ace vs Querious: catalog facts
Sequel Ace	Querious
Free Free and open source.	Paid One-time purchase rather than a subscription, with a free trial.
macOS	macOS
Native macOS application Focused on MySQL and MariaDB	Native Mac app built only for macOS JSON editing with validation and formatting
macOS only Supports only MySQL and MariaDB	macOS only, requires macOS 12 or later Supports MySQL and compatible databases only, not PostgreSQL
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Not stated if it 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.