ChorusOS 3
eCos 5
Erlang 218
EROS 10
FreeRTOS 4
KolibriOS 4
L4 13
Linux 16
MenuetOS 10
Nemesis 3
RTEMS 6
RxDOS 4
TRON 8
| | Open Source - Operating Systems, Software, Computers 14
 CarbonKernelCarbonKernel
 RTOS simulator based on event-driven simulation methods with concurrent target debugging abilities, mimics OS behavior, to implement and test embedded software on workstations. Descriptions, downloads, documents. [Savannah, Open Source, GPL]
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E.R.I.K.A.E.R.I.K.A.
 Microkernel RTOSs and set of integrated tools to develop embedded realtime applications, made to support all architectures used in power train controllers in automotive industry. Kernels have 2 main layers: Kernel Layer, Hardware Abstraction Layer, HAL. [Open Source, GPL]
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NicheTaskNicheTask
 A multitasking embedded operating system with a proven track record, expressly designed for embedded devices with limited resources.
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Nilsen Elektronikk ASNilsen Elektronikk AS
 Makes 2 very small, open source realtime OSs for embedded systems, written in C: proc Real-Time Kernel, preemptive, mature; nesos Finite State Machine Operating System (FSMOS), modular, use concurrent programming methods in little time and space. Also: nemon Boot and Debug Monitor; Embedded Web Servers.
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RET & COM ResearchRET & COM Research
 Makes RadiOS, Radiant Operating System; realtime, multitasking, multiuser, for i386+, written in all assembly in NASM. Goal: create OS that combines all advantages of OS/2 and Unix; ftp downloads. [Public Domain]
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rtmkrtmk
 Realtime microkernel: preemptive, fully re-entrant, multithreaded, SMP, continuations, full locking primitives; shares many ideas with Mach, developed by CMU in late 1980's, early 1990's, stopped in 1994. [GPL]
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RTMX, Inc.RTMX, Inc.
 Makes RTMX O/S: IEEE POSIX realtime extensions to OpenBSD, with vendor specific ports for embedded, dedicated systems, application specific Internet/intranet servers. Many fine features. North Carolina, USA.
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S.Ha.R.K.S.Ha.R.K.
 Dynamic configurable kernel architecture to support hard/soft/non realtime use with interchangeable scheduling algorithms: fully modular in scheduling policies, aperiodic servers, concurrency control protocols; all not modular in most traditional OSs. Derived from HARTIK: HArd Real TIme Kernel. [GPL]
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Solar_OSSolar_OS
 Also Sol_OS; goals: realtime, coded in 32-bit ASM, fast, very simple, small, cooperative multitasking, programs have full hardware control, modern OOP GUI, suitable for desktop targets. Open source, GPL.
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Linux Journal: Open Source Software for Real-Time SolutionsLinux Journal: Open Source Software for Real-Time Solutions
 Compares 2 open source OSs for embedded uses: RTLinux, eCOS by Cygnus. (October, 1999)
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