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EMS SQL Manager vs HeidiSQL: catalog facts
EMS SQL Manager	HeidiSQL
Freemium Free Lite edition and free trials; full editions are paid, with backup tools from about…	Free Free and open source under the GPL. Donations are welcomed but nothing is withheld.
Windows	Windows, Linux
Editions for PostgreSQL, SQL Server, MySQL, Firebird, Oracle and DB2 Free Lite edition available	Exports structure and data directly to another server, not just to a file Native Delphi application; it starts instantly and stays small
Windows only Separate products per database system	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
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 21, 2026

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