letos.org

Yes. Letos is free for everyone, has no paid edition, and is released under the GPL license, which allows use for any purpose. The site also states there is no telemetry. So if your question is whether you can download, use, and inspect Letos without paying or being tracked by the app itself, the published answer is yes.

What "free" means here

The site makes three specific claims that matter more than the general word "free":

• Free for everyone — no paid tier is offered.
• No paid edition — there isn't a commercial version with extra features held back.
• No telemetry — the application does not report usage data back, according to the project.

That combination is stronger than "free to download." A free download with a paid pro edition, or with analytics built in, would be a different situation. Letos describes neither.

The license

Letos is released under the GPL license and is described as free to use for any purpose. GPL is a copyleft open-source license, which is why the project can say it is open source rather than just freeware — the source is available and the license grants broad rights to use, study, and modify it.

If your reason for asking is compliance — for example, using Letos inside a company or bundling it with something — the GPL is the term that governs that, not the "free" label. Check the license text for your specific case.

Other things the site confirms

The portability point is worth noting alongside the licensing: there is no installer or uninstaller, so there is no install-time agreement screen or account step described.

A note on Windows code signing

The site states that free code signing for Windows is provided by SignPath.io, with the certificate issued by SignPath Foundation. This is about how the Windows build is signed, not about cost or licensing — it does not change the free/GPL status. It is relevant only if you are checking why the Windows binary carries a particular signature.

What the site does not say

The available material does not describe pricing pages, payment platforms, or account requirements, because none are indicated. It also does not spell out exceptions, commercial support terms, or dual-licensing options. If you need those details, they are not established by the site content summarized here — treat them as unconfirmed rather than assuming either way.

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

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.

Letos 4.0.3 adds relationship highlighting to the ERD editor. When you select an entity in a diagram, Letos now highlights the entities and connections related to it with a subtle glow effect, so you can trace relationships in a complex schema without manually following every line. The release was posted on 12 August 2026.

The headline feature: relationship highlighting

The ERD (entity-relationship diagram) editor is where you lay out tables and their foreign-key links visually. In larger schemas, a single table can connect to a dozen others, and the connecting lines quickly become hard to follow.

In 4.0.3, selecting an entity changes that:

• Related entities are highlighted — the tables connected to your selection stand out from the rest of the diagram.
• Related connections are highlighted — the lines joining them get the same treatment.
• The effect is a subtle glow, not a hard color swap, so the overall diagram stays readable while the relevant path is emphasized.

The practical result: instead of tracing lines by eye, you click a table and immediately see its neighborhood.

When this helps most

• Auditing a schema you didn't design, where you need to know what a table touches before changing it.
• Reviewing foreign-key coverage — selecting a parent table shows which children reference it.
• Presenting or explaining a data model, where you want to walk through one relationship cluster at a time.

How to use it

1. Open your database in Letos and open the ERD editor for the schema you want to inspect.
2. Click an entity (table) in the diagram.
3. Read the highlight: the glowing entities and connections are the ones related to your selection.
4. Click elsewhere or select a different entity to move the focus.

No configuration is mentioned for this feature — it appears to be on by default once you're on 4.0.3.

Getting the release

Letos is distributed as a download from letos.org. It is portable: the site states there is no need to install or uninstall — you download, decompress, and run. It runs on Windows, Linux, and macOS.

If you already run Letos, check the download options on the site for the 4.0.3 build. For the complete list of changes in this release, the news post and the ChangeLog are the places to look; the announcement excerpt above covers only the ERD highlighting feature.

Context worth knowing

• Letos is free and open source under the GPL license, with no paid edition and no telemetry, per the project site.
• It was formerly known as SQLiteStudio, so documentation and discussions from that era may still use the old name.
• Windows code signing for the project is provided via SignPath.io, with a certificate from the SignPath Foundation.

If your work involves reading or editing SQLite schemas rather than just querying them, the 4.0.3 ERD highlighting is the reason to update. If you only run queries and never open the diagram view, this release changes little for your day-to-day use.

Letos is available for download directly from letos.org. The site offers a primary Download link plus a Source Code (ZIP) option, with a "Show all download options" link for platform-specific packages. Because Letos is portable, you download it, decompress it, and run it — no installation or uninstallation is required.

Download options on letos.org

The homepage presents these entry points:

Letos runs on Windows, Linux, and MacOS X, so the full download list is where you pick the build matching your operating system.

Steps to get Letos running

1. Go to letos.org.
2. Click Download, or click Show all download options if you need a specific platform build.
3. Save the archive to your machine.
4. Decompress the archive.
5. Run the application from the decompressed folder.

The expected result is a working Letos instance without any installer step, since the app is portable by design.

Things to know before you download

• No paid edition. Letos is free for everyone, open source, and has no paid tier.
• No telemetry. The site states there is no telemetry in the application.
• Licensing. It is released under the GPL license and is free to use for any purpose.
• Former name. Letos was formerly known as SQLiteStudio, so older references to SQLiteStudio point to the same tool.
• Windows signing. Free code signing for Windows is provided by SignPath.io, with the certificate issued by SignPath Foundation — relevant if you are checking the authenticity of a Windows build.

What you get once it's running

Letos is a tool to create, edit, and browse SQLite databases. It is described as feature rich while remaining light and fast. The most recent release noted on the site, Letos 4.0.3, adds relationship highlighting in the ERD editor: selecting an entity highlights related entities and connections with a subtle glow effect, which helps when navigating complex diagrams.

If you only need the source, take the Source Code (ZIP) link instead of a platform build. If you want the newest features, check the download page for the current release before grabbing an older package.

Yes. Letos is the current name of the project formerly known as SQLiteStudio. The site states plainly that "Letos was formerly known as SQLiteStudio," so the two names refer to the same SQLite database tool rather than two competing products. If you are looking for SQLiteStudio downloads or updates, check Letos instead — that is where releases now appear.

What the rename does and does not change

The rename is a branding change, not a change in what the software does. Letos is still a tool to "create, edit, browse SQLite databases," which is the same core purpose SQLiteStudio had.

What stays the same, according to the site:

• License and cost: released under the GPL, free for everyone, with no paid edition.
• Platforms: Windows, Linux, and MacOS X.
• Portability: no install or uninstall needed — download, decompress, and run.
• Privacy stance: no telemetry.
• Distribution: downloads and source code (ZIP) are offered from the Letos site, along with a full list of download options.

What changes is the name you search for and the site you visit for news, downloads, and release notes.

Version continuity under the new name

Release numbering continued under the Letos name. The site's news section shows Letos 4.0.3 released, posted on 12 August 2026. That release adds relationship highlighting in the ERD editor: selecting an entity highlights related entities and connections with a subtle glow effect, which the announcement frames as a way to make complex diagrams easier to navigate.

So if you were tracking SQLiteStudio versions, the version line did not reset — it carried on into the 4.x series as Letos.

Where to go for what

Practical takeaway

If you used SQLiteStudio and are wondering whether it was abandoned or replaced, the answer is neither: it was renamed to Letos and development continued. Use the Letos site for the current download and the latest release notes, and expect the same GPL-licensed, cross-platform, portable SQLite editor you had before.