What is Letos (letos.org)?

Updated

Letos is a free, open-source desktop application for creating, editing, and browsing SQLite databases. It runs on Windows, Linux, and macOS, requires no installation, and has no paid edition or telemetry. If you used SQLiteStudio before, Letos is the same project under a new name — so existing familiarity carries over directly.

What Letos actually does

Letos is a SQLite database manager. Its stated purpose is to let you create, edit, and browse SQLite databases through a graphical interface rather than the command line. The site describes it as "powerful, yet light and fast," which positions it as a full-featured tool that doesn't demand heavy system resources.

The current release noted on the site is Letos 4.0.3, published 12 August 2026. That release added relationship highlighting in the ERD (entity-relationship diagram) editor: selecting an entity now highlights related entities and connections with a subtle glow effect, which helps when navigating complex diagrams.

Key characteristics

Attribute Detail
License GPL — free to use for any purpose
Platforms Windows, Linux, macOS
Installation Portable — download, decompress, run; no install or uninstall
Editions No paid edition
Telemetry None
Former name SQLiteStudio

Who it's for

  • Developers and analysts who work with SQLite files and want a GUI instead of the sqlite3 CLI.
  • Former SQLiteStudio users who want to know where the project went — the rebrand means your existing knowledge of the tool still applies.
  • Users on locked-down or shared machines who can't install software: the portable model means you can run it from a decompressed folder without touching the system.
  • Anyone evaluating database tools on privacy grounds: the site explicitly states there is no telemetry and no paid tier, so there's no upsell path or data collection to weigh.

What to check before committing

  1. Confirm the download source. The site offers a direct ZIP download plus a "Show all download options" link. Use the official site or the linked GitHub repository rather than third-party mirrors.
  2. Verify your platform. Cross-platform support is stated for Windows, Linux, and macOS, but check that a build exists for your specific OS and architecture among the download options.
  3. Note the code-signing detail. Windows code signing is provided by SignPath.io with a certificate from SignPath Foundation. If you're on Windows, this is what backs the signature on the binary — useful if your environment requires signed executables.
  4. Read the changelog if you're upgrading. The site links a ChangeLog and a news page; the 4.0.3 ERD highlighting change is one example of what you'd find there.

Where to get help and report problems

The site links to GitHub Discussions for questions, a Wiki for documentation, and a Bugs & Ideas tracker for issues and feature requests. There's also a Donate link — consistent with a GPL project that has no paid edition to fund development.

If you need a lightweight, no-cost SQLite GUI with no installation step and no telemetry, Letos fits that description based on its own published information. If you need a tool with commercial support contracts or a paid tier with guarantees, this project explicitly doesn't offer one.