Dr. Stephen Hawking has ALS (amyotrophic lateral sclerosis) and has relied on assistive technology. Researchers from Intel Labs collaborated with Hawking on a new solution called ACAT (Assistive Context Aware Toolkit) that makes it easier for him to communicate, and navigate the computer and the Internet. ACAT uses various Microsoft open development tools, including C#, Windows Forms, WPF, and .NET 4.5, and the project was recently open sourced on GitHub so that developers and those with disabilities could customize it to their needs.