This plugin defines the structure for trigger management in the control panel.
A trigger defines some actions to be executed when a Craft event is triggered, under certain conditions. Conditions can be specific to each trigger or global.
This plugin defines triggers for more than 25 Craft events (entries, assets, categories, users and ecommerce related events) and more than 15 conditions. And more to come...
This plugin comes with a simple log action for testing purposes, any useful actions would need to be made through a custom plugin as this would be site specific to your needs, see the documentation to learn how to create actions, triggers and conditions.