Idophor is a no-rinse agent provided you mix it up correctly. I use 1ml per 1L of water. In that concentration, you do not need to rinse, and bottles sanitize in 20 seconds or less.
As Dean notes, Iodophor at 12.5ppm is no-rinse. Higher concentrations should be rinsed. If you want more info on it google for the Basic Brewing podcast with one of the people who makes iodophor.