More information is available at the official website.

OPie is a radial action-binding addon, enabling you to bind groups of infrequently used actions to a ring that appears when you trigger it using a hot key / mouse binding.

Consider some of the common items taking up action bar space:

• Short-term quest and instance items
  
• Potions, Health stones, Mana gems
  
• Damage-aborbing shields (when was the last time you used Frost Ward?)
  
• Shapeshifts, stances and mounts
  
• Foods: biscuits, stat buffs, arena water
  
• Situational abilities like resurrects or long-cooldown spells
  
• Equipment manager sets
  

Download OPie, group those into rings (/rk), bind rings to mouse buttons (/opie), enjoy uncluttered combat in style. See the features page for more detail.