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