Software · Audio & music

TrustedQSL

Radio Contact validation.

Completely free
Windows and Linux
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by Flathub
License: BSD-4-Clause — Open source (permissive)confirmed by Flathub, Winget (Windows Package Manager)
Open source: Yes
Commercial use: Yesconfirmed by Flathub
Account required: not documented
Credit card required: Noconfirmed by Flathub
Watermark: not documented
Ads: not documented
Platforms: Windows and LinuxEstablished by Linux: Flathub · Windows: Winget
Publisher: K1MU
Latest version: 2.8.7 (21 October 2026)
Latest activity: 27 October 2026
Source code: sourceforge.net/p/trustedqsl/tqsl

Overview

Features described in its Winget manifest: document signing.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“Open source libraries and utilities to support using digital signatures for Amateur radio QSL information” — Winget, 10 November 2026

At a glance

All of TrustedQSL is free: no feature is locked behind a paid plan, and its code is open.

Its licence (BSD-4-Clause) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

Open source code
Commercial use allowed

About

This is the TrustedQSL project, which provides tools for digitally signing Amateur Radio QSO records. This software consists of voluntary contributions made by many individuals on behalf of the ARRL. More information on the "Logbook of The World" project and the ARRL is available from the ARRL Web site at www.arrl.org.

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 9 November 2026
Facts collected from Winget (Windows Package Manager) (publisher, licence, platforms, version) — 6 November 2026
Last technical check: 6 November 2026
Description from Flathub — AppStream (Flathub)

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