UPDATE 01-2020: this plugin has been discontinued due to lack of time to properly maintain it.
The plugin is very basic yet powerful and effective:
- There are no dependencies on other plugins or functions.
- It supports Google Tag Manager, allowing you to implement the tracking code directly. See here more details on how to implement GTM in WordPress.
You can download the plugin directly from your WordPress dashboard or manually from here: Easy Cookie Law Plugin at the WordPress.org Repository