Birger Engineering Canon EF Mount (2008) is a fully electronic mount supporting all relevant functions of EF lenses, including iris and focus. It is either controlled by PC/MAC or by a Viewfactor Impero (see below). The mount communicates all lens data to the camera (iris, focus, zoom). The installation of the Birger mount voids the camera's warranty. See Still Lenses C/EF > Adapting Lenses > EF to Cine for some more bits of information about the mount.
 
 
The Viewfactor Impero is a controller unit originally made for the Viewfactor Inclino (an external motor drive to control iris, zoom and/or focus). Birger adopted it to control their EF mount. The Impero can be set up to work wired as well as wireless. As of 2008 it required a modification of the Impero's Bluetooth radio unit as well as a modification of the COM port (from CAN to RS232). In 01.2009 Viewfactor started to ship the Imperos with a compliant radio unit by default, and as far as I get it, there is a cable produced by Birger to prevent the port modification (by simply crossing wires, that usually would not cross). That cable is also required for firmware updates. The Impero is powered by a 9V battery. The production seems to have been stopped in 2010. A new batch is announced.

P+S Technik Interchangeable Mount System RED ONE [PS-IMS-R1] follows a two-piece universal mounting concept. The base replaces the original mount, which then takes all kinds of different lenses via adapters (available for PL, Panavision, BNC-R, Nikon F, Canon EF + FD, Leica R + M, Sony B4 and C mount). Base plates are not only available for RED ONE, but also for Weisscam HS2 and 3 more 16mm camera systems. The mount is completely non-electronical (no iris, focus, IS etc.). The installation of the P+S mount voids the camera's warranty and future upgrades of the camera will be denied.

Wicked Circuits Dumb Mount is a solely mechanical mounting module, that replaces the ONE's default mount. Since it doesn't have any electronic coupling, the lens' iris, AF or IS etc. can't be used. First versions were plastic, later versions also made from metal. It supports EF and EF-S mount and was meant to be factory upgradeable to Smart Mount. Using it leaves the camera warranty intact. This mount was often recommended to use as a base mount to adapt other mounts to RED, thanks to the high compatibility of Canon EF. The mount Ø is 96.2mm and weights 45.4g.
 
The Wicked Circuits Smart Mount features electronic coupling and uses an external controller to control the lens (see below). It supports EF and EF-S and is supposed to work with any EF lens, even 3rd party (... in theory ... not all lenses were indeed tested). The mount seems to be powered by the controller. Presented at NAB 2010, first reports go back to 2008. Few samples seem to have made it out of the factory. It was announced to become RED certified (which would have meant a warranty preservation). Same size as the Dumb Mount.
 
The Wicked Circuits Smart Mount Controller (Standard Version) supports electronically transmitted manual control of focus and iris and offers remote control either using a Bluetooth device (supports Win Mobile, XP - 7, OS X and iPhone) or any standard Sony compatible IR remote. It saves multiple focus positions and recalls them in any order with adjustable speed settings. Powered by the camera's AUX or some other external 12V power source. Weights 113.4g and has a size of 128 x 73 x 20mm. Presented at NAB 2010. Production state is uncertain, the website still shows a "coming soon". There is a report about it here, so it does exist!!  
There also was a Pro version of this controller announced, as well as they do mention an upcoming Pro mount in their FAQ.