See also:

• Computers: Software: Operating Systems: Realtime: POSIX  (7)
• Computers: Software: Operating Systems: Realtime: TRON  (10)
• Computers: Software: Operating Systems: Submicrokernel  (12)

• Express Logic, Inc. - Makes ThreadX RTOS, picokernel, portable, scalable, preemption threshold, supports many processors from small microcontrollers to high-performance RISC and DSP; full IDE support from leading compiler/debugger makers. No royalty on all products.
• Green Hills Software, Inc. - Sells, supports ThreadX, efficient, no-royalty, full C source, robust RTOS, gives realtime embedded developers technically advanced multitasking system, picokernel gives very high-performance with very small memory needs.
• ThreadX - Growing article, with links to many related topics. Wikipedia.

• Oki Selects Express Logic's ThreadX RTOS for ARM Microcontrollers - No royalty RTOS maker announces its ThreadX is selected by Oki Semiconductor as preferred for its new line of low-level 32-bit controllers using industry-leading ARM7TDMI processor, and related development systems. [Embedded Star] (October 6, 2003)