ESOPie is a radial action-binding addon inspired by the WoW addon OPie by cfxfox.
ESOPie provides up to 6 bindings to display rings of up to 12 usable slots much like the Quickslot feature with sub-rings that can be used to create a deep tree of options.
See the wiki for more information.
Download the latest stable release.
Extract the contents of the archive and copy or move the ESOPie folder into your Documents/Elder Scrolls Online/live/AddOns folder.
Boot the game or reload the UI if already logged in. ESOPie should appear in the Add-Ons menu.