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Chat2DB vs pgen: catalog facts
Chat2DB	pgen
Free The community edition is free.	Free Free; AI use relies on your own provider key or a local model.
Windows, macOS, Linux, Web, Self-hosted, Command line	macOS
Connects to more than 40 databases Bring your own AI model for query generation and explanation	AI writes SQL into the editor and never runs it directly Read-only mode, production guards and row caps
AI features depend on configuring an external or local model Project has moved between GitHub organizations	macOS only PostgreSQL only
Downloadable app, Self-hosted	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is 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 October 2, 2026

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