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SQLite Viewer vs Letos: catalog facts
SQLite Viewer	Letos
Free Free to use in the browser.	Free Free and open source with no paid edition.
Web	Windows, macOS, Linux
Runs client-side so data stays in the browser No installation needed	Portable build that needs no installation No telemetry and no paid edition
Read-only Files must fit in memory	Works only with SQLite databases New name may confuse users searching for SQLiteStudio
Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
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 October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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