Web Directory

» BeRTOS
   A free real time operating system suitable for embedded platforms. Runs on several microprocessors and microcontrollers, ranging from 8 bits to 32 bits and on personal computers.
   http://www.bertos.org/

» CarbonKernel
   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]
   http://savannah.nongnu.org/projects/carbonkernel/

» Katix
   Realtime OS (Katix RTOS) and Katix Embedded Linux (Black Cat Linux). [Open source]
   http://www.katix.org/

» Linux Journal: Open Source Software for Real-Time Solutions
   Compares 2 open source OSs for embedded uses: RTLinux, eCOS by Cygnus.
   http://www.linuxjournal.com/article/3576

» Nilsen 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: ne
   http://www.nilsenelektronikk.no/

» 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.
   http://www.rtmx.com/

» 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. Der
   http://shark.sssup.it/

» Solar_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.
   http://www.oby.ro/os/

» rtmk
   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]
   http://rtmk.sourceforge.net/