Coca is a tiny app that puts an icon in your menu bar. Right-click the icon to prevent your system from automatically going to sleep, dimming the screen or starting screen savers. Right-click again to disable Coca.
Left-click the icon to display a menu which lets you quickly access a timer and a settings panel. Here you can fine tune Coca’s behavior to your preferences, like switching the left and right clicking action.
Coca is fully compatible with Yosemite and El Capitan, it's interface even adapts to your menu bar color.