Dr Johns has another personal website which deals with all other aspects of his research and clinical practice in Sleep Medicine, as well as other topics on which he has published.

Dr Johns is also associated with a corporate website dealing with Optalert technology for monitoring alertness/drowsiness in active people, such as drivers. Dr Johns is the Founding Director and Chief Scientist of the company which is now called Optalert Holdings Pty Ltd.

The Epworth Sleep centre has its own website at