|Linux||This is the primary site for the Linux kernel source|
eCos is provided as an open source runtime system supported by the GNU open source development tools. Currently eCos supports ten different target architectures (ARM, Hitachi H8300, Intel x86, MIPS, Matsushita AM3x, Motorola 68k, PowerPC, SuperH, SPARC and NEC V8xx) including many of the popular variants of these architectures and evaluation boards.
MMU Less version of Linux. Support ARM, Coldfire etc processor.
FreeRTOS.orgTM is a portable, open source, mini Real Time Kernel - a free to download and royalty free RTOS that can be used in commercial applications
Support 17 architectures. ARM, AVR32, MSP430 etc.
The RealTime Application Interface for Linux. It support following architecture ...
x86, PowerPC, ARM
An embedded real-time multi-task OS specially for ARM Cortex M4, M3 and M0 chipset.
QNX is real time RTOS, which support ARM, MIPS, PowerPC, SH and X86 Processor family.
Vxworks is also real time rtos, it support wide range of processor architectures like ARM, PowerPC, ColdFire, MIPS etc.
INTEGRITY is hard real time rtos. It support ARM, PowerPC, Coldfire,x86 etc processor architectures.
|ThreadX||ThreadX is Express Logic's advanced Real-Time Operating System (RTOS) designed specifically for deeply embedded applications. It support ARM, PowerPC,X86 etc.|
µC/OS-II, The Real-Time Kernel is a highly portable, ROMable, very scalable, preemptive real-time, multitasking kernel (RTOS) for microprocessors and microcontrollers. It support ARM, PowerPC,X86 etc.
|embOS||embOS is a priority-controlled multitasking system, designed to be used as an embedded operating system for the development of real time applications for a variety of microcontrollers.|
|SafeRTOS||Real Time OS for mission critical applications based on the FreeRTOS scheduling algorithm, certified for IEC61508 SIL3, FDA 510K or DO-178B.|