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Navicat Premium vs HeidiSQL: catalog facts
Navicat Premium	HeidiSQL
Paid Commercial software sold with perpetual licenses; a trial is available.	Free Free and open source under the GPL. Donations are welcomed but nothing is withheld.
Windows, macOS, Linux	Windows, Linux
Handles relational databases, MongoDB, Redis and Snowflake in one app Data and structure synchronization between databases	Exports structure and data directly to another server, not just to a file Native Delphi application; it starts instantly and stays small
Paid license required after the trial Closed source	Windows-first; the Linux builds come from a separate Lazarus branch No macOS build
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 21, 2026

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