A popular real-time operating system for embedded systems from Wind River, Alameda, CA (www.windriver.com). It is used to control a wide variety of products, including network and telecom devices, test and measurement equipment, computer peripherals and consumer products. It is also used in the automotive and aerospace industries for engine control and avionics. Available for a large number of CPU types, applications are created in Wind River's Tornado development environment. VRTX Roots VxWorks was originally an extension of the VRTX real-time OS kernel. Wind River added a file system and integrated development environment (IDM) that made the VRTX operating system "Work"able. Later, the VRTX kernel was rewritten. See VRTX.