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Sqlectron vs HeidiSQL: catalog facts
Sqlectron	HeidiSQL
Free Free and open source with no paid edition.	Free Free and open source under the GPL. Donations are welcomed but nothing is withheld.
Windows, macOS, Linux	Windows, Linux
Lightweight and simple interface Works with several database engines from one app	Exports structure and data directly to another server, not just to a file Native Delphi application; it starts instantly and stays small
Fewer administration features than full database IDEs No dedicated project website beyond the repository	Windows-first; the Linux builds come from a separate Lazarus branch No macOS build
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-2.0
No account 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.