Is Letos Free and Open Source?

Updated

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

Question Answer from the site
Paid edition? No
Telemetry? No
License GPL
Platforms Windows, Linux, MacOS X
Installation Portable — download, decompress, run
Former name SQLiteStudio

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.