You must read the disclaimer before downloading.
From the Authors:
E-triloquist, the personal computer augmentative communication aid software formerly known as "SpeakEasy", developed as a family project. Dad had amyotrophic lateral sclerosis (ALS) and lost his ability to speak in the course of the disease. Son is particularly versatile in personal computers. Our first version (named "SpeakEasy" at the time) was made available on the Internet in early 1995. We are now on Version 5.7 with even more new features suggested by current users of the program, and with full support for Windows-ME and Windows-XP operating systems. See the New Features page for full details on the enhancements in V5.7. Go to the Downloads page to install or upgrade to the latest version of E-triloquist.
Most users of the program can still use a keyboard, albeit slowly. For those who can no longer type, E-triloquist can easily be teamed-up with on-screen keyboards, scanners, word-predictors, single-switch input, or other assistive input devices such as Click-N-Type virtual keyboard from Lake Software, SofType from Origin Instruments, WiViK® on-screen keyboard (virtual keyboard) software, Virtual On-Screen Keyboard by MiloSoft, My-T-Mouse from IMG, and a variety of input devices and augmentative communication products from Prentke Romich Company. A longer list of devices can be viewed on the ALS Resources page. These tools can also be added on at a later time if the need arises. Note: when looking for assistive input devices, be sure to get one that will work with ALL of your Windows programs, (e.g. E-triloquist, word processor, e-mail, web browser, ...) not just one specific software program.