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DbGate vs Querious: catalog facts
DbGate	Querious
Freemium DbGate is GPL-3.0 licensed and free to use for any purpose. A few connectors, including…	Paid One-time purchase rather than a subscription, with a free trial.
Windows, macOS, Linux, Self-hosted	macOS
Covers SQL and NoSQL databases, including MongoDB, Redis and Cassandra, in one client Schema compare and synchronisation, ER diagrams and a visual query designer	Native Mac app built only for macOS JSON editing with validation and formatting
A handful of connectors are marked premium and are not in the free build Electron-based, so it is heavier than a native client	macOS only, requires macOS 12 or later Supports MySQL and compatible databases only, not PostgreSQL
Downloadable app, Self-hosted	Downloadable app
Open source	Closed source
License: GPL-3.0	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 21, 2026	Official website Full listing and sources Checked September 23, 2026

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