MQTT Explorer

An all-round MQTT client that provides a structured topic overview

View project on GitHub



  • Fix Copy & Paste
  • Allow setting QoS for subscriptions
  • Show Meassge ID (for QoS > 0)
  • Improve JSON editor
  • Allow multiple connections to the same broker from MQTT Explorer (random client ids)
  • Remove recursive topic removal limit
  • Retain focus on publish input fields when publishing
  • Fix editor layout issue
  • Fix password input
  • Fix charts where json properties contain periods
  • Fix publish sidebar width
  • Fix plot range selection
  • Update Electron

A downgrade to a version prior to 0.4.0 is due to a new configuration format not possible.


  • Add keyboard support
    • Navigate with arrow keys and tab return and escape
    • Delete topic topics with the delete key
  • Add time range options to chart panel
  • Add “Clear Data” option to charts
  • Add support for client certificates
  • Add support for SNI (encryption-related)
  • Make connection profile list scrollable
  • Improve the browsability of previous messages
  • various small fixes


  • Ubuntu performance fix


  • Ubuntu bugfix release
  • Add wayland support (for snap builds)


  • Add functionality to plot JSON data
  • Add chart panel, containing multiple plots (bottom panel)
  • Chart panel and settings will be restored on restart
  • Charts can be paused
  • Panels can be hidden/overlap others completely
  • Plot range can be customized
  • Plot interpolation can be customized
  • Migrated public broker from to
  • Fix unrounded time intervals in the message history
  • Fix weird plot curve interpolations


  • Add a pause function
  • Add light / dark themes
  • Add localized date formatting
  • Allow pinning self-signed-certificates
  • Allow copying values from the message history
  • Buffer changes while in pause mode
  • Improve layout
  • Improve numeric plot layout and smooth curves
  • Improve scroll behavior message history
  • Improve performance and memory footprint by ~30%
  • Improve text selection behavior (Ctrl+A) for value preview and history
  • Immediately apply changed settings
  • Fix memory leak on search and disconnect
- Deactivate auto-update for Windows portable releases.
  • Fix OSX code-signing and auto-update


  • Highlight differences in the last received message with a “diff” view
  • Magnify app content with “Ctrl +”, “Ctrl -“, “Ctrl 0”
  • Make user interactions more predictable by removing “select topic on mouse over”
  • Add “Quick Preview” setting, to enable topic selection on mouse over
  • Add JSON formatter
  • Show error when connection to the mqtt broker is lost
  • Fix bug where mqtt explorer resets the tree after a reconnect
  • Fix MQTT-Client id

0.2.1, 0.2.2

  • Release for Mac App Store
  • Release for Microsoft Store


  • Support multiple connection profiles
  • Support custom subscriptions
  • Delete Topics recursively
  • Add option to disable activity indicator
  • Add connection health indicator
  • Remember settings after exiting the app
  • Fixed ws:// connections
  • Fixed exception after failed connection
  • Rework topic selection indicator
  • Fix scrollbar (draggable scroll handle)
  • Improve look & feel
  • Reduce binary size by ~60%


  • Add search function
  • Fix a crash on windows
  • Greatly increase performance
  • Show broker statistics (Settings sidebar)
  • Show more content in topic preview
  • Make right sidebar resizable
  • Fixed minor visual imperfections.


  • Improved error handling

  • Fix plot


  • Plot topics in a graph

  • Delete retained topics with click

  • Show message retention and QoS
  • Set message retain and QoS
  • Subscribed to broker statistics: $SYS topic
  • Improved error handling

  • Fixed Copy&Paste

  • Crash on launch


  • Fix auto-updater fallback
  • Add debugging capability
  • Show receive date next to message value
  • Fix certificate validation switch


  • Fix issue with mqtt authentication


  • Fix performance bottleneck
  • Fix missing icons


  • Add splash screen


  • Fixed bugs
  • Added bugs


  • Initial Release