- Widen is a free, open-source, native macOS GUI for PostgreSQL with AI-powered text-to-SQL.
- Its agents automatically search the schema, draft SQL, and verify it against PostgreSQL before presenting it to the user.
- On-device AI mode works on macOS 26+ with Apple Silicon, while cloud mode uses any model via OpenRouter; query results never leave the Mac.
- Features include review-before-run, persistent sessions, schema discovery, and support for SELECT, INSERT, UPDATE, DELETE.
- Privacy-focused: no account needed, passwords stored in macOS Keychain, no analytics, and on-device mode works fully offline.
- Current limitations: PostgreSQL only, no table-structure editor yet, and on-device AI is limited to simple SELECT queries.