Express Logic develops, markets and supports the ThreadX® real-time operating system (RTOS), NetX™ TCP/IP networking stack, USBX™ USB stack, and FileX® embedded file system, and PrismX™ GUI toolkit for embedded applications. ThreadX is a royalty-free, full source code, small-footprint, low-overhead RTOS that is extremely easy to learn and use. ThreadX is one of the most widely deployed RTOS products in the world, with over 800 million products based on ThreadX.