When I used to work from a Mac every day, Keyboard Maestro was one of my most used apps. Nowadays, my automation needs are satisfied by a combination of Workflow, Editorial, and Pythonista on iOS, but I still have a deep appreciation for the power and versatility of Keyboard Maestro on OS X.
Keyboard Maestro 7.0 has been released today with over 100 new features and improvements. My friend Gabe has a good first look at the new version and the Keyboard Maestro website explains in detail the new options for contextual menus for actions, new triggers, themed palette styles (nice), and more.
If you need to automate tasks on a Mac, you can't go wrong with Keyboard Maestro. You can download the new version and check out the upgrade options here.