For the list of available plugins, see TeamCity Plugins
Steps to install a TeamCity plugin:
Shutdown the TeamCity server.
Copy the zip archive with the plugin into the TEAMCITY_DATA_DIR/plugins directory.
Start the TeamCity server: the plugin files will be unpacked and processed automatically. The plugin will be available in the Plugins List in the Administration area.
tip
To uninstall a plugin, shutdown the TeamCity server and remove the zip archive with the plugin from the TEAMCITY_DATA_DIR/plugins directory.
All the agents will be upgraded automatically. No agent or server restart is required.