Hearthstone Deck Tracker's functionality can be extended by plugins from third-party developers. Please note that HearthSim cannot support third-party plugins, and you will be using them at your own risk.
Installing a plugin
To install a plugin, download the corresponding .dll or .zip file. You will find it on the "Releases" page of the corresponding plugin.
After you've downloaded a plugin, drag and drop it into the "Plugins" window of Hearthstone Deck Tracker. You'll find it under Options -> Tracker. Then, restart Hearthstone Deck Tracker and enable the plugin in the same window as before.