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Letos vs Base: catalog facts
Letos	Base
Free Free and open source with no paid edition.	Freemium Free download, with a paid licence available to buy from the developer.
Windows, macOS, Linux	macOS
Portable build that needs no installation No telemetry and no paid edition	Native macOS interface Visual table editor avoids hand-written ALTER statements
Works only with SQLite databases New name may confuse users searching for SQLiteStudio	macOS only Works only with SQLite databases
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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