SwitchXS for Mac

From AssistiveWare:

SwitchXS(R) provides virtually complete access to Mac OS X and all standard Mac applications for people who can only use one or more switches. It offers full mouse and keyboard emulation by means of a so-called scanning mode. With each click on the switch the user selects an action, such as "move the cursor up", "scan menus", or "type B", from a "scanning" menu. SwitchXS is typically used by people who are, for example, quadriplegic due to an accident, or suffering from neuromotor diseases such as Amyotrophic Lateral Sclerosis (ALS) or Spinal Muscular Atrophy (SMA) with very limited limb movement.

SwitchXS provides a number of predefined scanning panels that the user can choose to move the cursor, click and type into all standard Mac applications. It also allows the user advanced control over features such as audio-cueing, speech-cueing, key repeat, scanning speed and cycling, mouse speed and movement, and SmartTransparency(TM), which makes the scanning panel partially or fully transparent when no scan is taking place to enjoy optimum use of screen real-estate.

SwitchXS works with any HID compliant USB gamepad, joystick and keyboard, and also with any HID compliant USB mouse or trackball. SwitchXS also works with USB switch interfaces emulating any of the above devices. SwitchXS is currently localized for English, French and Japanese, but works also with most other languages.

Includes LayoutKitchen, an editor to make custom scan panels, using colored buttons, text and images and giving access to a write range of switch controlled actions.