MQTT Viewer for Windows

Debug and test MQTT in seconds.

Version 1.2.0 · 4 October 2026 Release notes

Install

Requires Windows 10 or 11.

  1. Run the installer and follow the prompts.
  2. Open MQTT Viewer from the Start menu.
  3. Connect to your broker.

Installed and portable builds update automatically.

x64 or ARM64?

Open Settings → System → About → System type. Choose x64 for Intel and AMD PCs, or ARM64 for ARM devices such as Snapdragon laptops and Surface Pro X.

Portable builds — no installer needed

Unzip the archive into a writable folder, then run mqtt-viewer.exe.

Download x64 portable
Download ARM64 portable
Windows SmartScreen

If SmartScreen appears, check that the file came from the MQTT Viewer release linked on this site. The installer is signed. If you trust the verified download, select More info, then Run anyway.

All Windows files & checksums

Compare the SHA-256 hash with the matching checksum file below. For the x64 installer:

certutil -hashfile MQTT_Viewer_v1.2.0_windows_amd64_installer.exe SHA256

  • x64 installer12.0 MB

    MQTT_Viewer_v1.2.0_windows_amd64_installer.exe

    DownloadSHA-256

  • ARM64 installer11.1 MB

    MQTT_Viewer_v1.2.0_windows_arm64_installer.exe

    DownloadSHA-256

  • x64 portable zip10.2 MB

    MQTT_Viewer_v1.2.0_windows_amd64.zip

    DownloadSHA-256

  • ARM64 portable zip9.4 MB

    MQTT_Viewer_v1.2.0_windows_arm64.zip

    DownloadSHA-256

Also available for Mac and Linux. All platforms →