Artemis is built up using plugins. This means devices, brushes, effects and modules (for supporting games!) can all be added via plugins.
On this page you can find a list of extra plugins available to download and use with Artemis.
Under Settings > Plugins you can find your currently installed plugins, these default plugins are created by Artemis developers.
On that same page you can click Import plugin. This is how you install any of the plugins you download below.
Brushes are what you apply to a layer to determine what the layer will display.
Some of the built-in brushes are key press, ambilight, solid, linear gradient, radial gradient etc.
Device providers add support for new devices to Artemis.
Effects are what you apply to a layer to change the way the brush is drawn.
Some of the built-in effects are audio visualization, blur, color adjustment, LED reveal etc.
Modules add extra data to the data model. Some modules are tied to games or applications, others are always available.
These plugins provide a wrapper around existing manufacturer's SDKs, allowing you to mirror the output of other applications to a brush which you can apply to all your devices. An example being the Razer integration of Overwatch.
To display sensor data like CPU usage or temperature on your rgb devices, read the wiki page
The plugins below extend Artemis in a way that doesn't fall into one of the categories above