Software · Development

MQTT5 Explorer

Simple yet powerful MQTT5 client.

Completely free
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: GPL-3.0 — Open source (copyleft)confirmed by Flathub
Open source: Yes
Commercial use: Yesconfirmed by Flathub
Account required: not documented
Credit card required: Noconfirmed by Flathub
Watermark: Not applicable
Ads: not documented
Platforms: LinuxEstablished by Linux: Flathub
Publisher: Omniaevo SRL
Latest version: 2.1.0 (2 November 2026)
Latest activity: 6 November 2026
Source code: github.com/Omniaevo/mqtt5-explorer/tree/master

Overview

Services and protocols mentioned: MQTT.

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

At a glance

MQTT5 Explorer is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (GPL-3.0) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
Commercial use allowed

About

The aim of this application is to bring the users a client app capable of making use of all the features of the version 5 of the MQTT protocol. The lack of any application that can offer the compatibility with the newer version of the protocol forced us to implement one to test the data of MQTT brokers workwise, why not to share this tool with others that may have the same issue?

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
Last technical check: 7 November 2026
Description from Flathub — AppStream (Flathub)

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