Open Source

CarbonKernel

savannah.nongnu.org

Open Source RTOS simulator based on event-driven simulation methods with concurrent target debugging abilities, mimics OS behavior, to implement and test embedded software on works…

276 visits Jan 10, 2025 Details

FreeRTOS

freertos.org

Portable, mini realtime scheduler (RTOS kernel); how to make full embedded solutions on Windows host with quality open source tools, low cost hardware; supports ARM7, PIC18, 8051, …

10 visits Sep 29, 2024 Details

Katix RTOS

funet.fi

Free, tiny.

347 visits Oct 3, 2024 Details

MenuetOS

MenuetOS.org

Graphical realtime OS written in all 32-bit assembly, for x86 i386+, fits on one floppy, protected memory, 44 kHz sound soon, GUI, DOS loader download; advancing well. [Open Source…

168 visits Mar 11, 2025 Details

NicheTask

freertos.com

A multitasking embedded operating system with a proven track record, expressly designed for embedded devices with limited resources.

258 visits Apr 20, 2026 Details

Nilsen Elektronikk AS

nilsenelektronikk.no

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), mod…

203 visits Mar 2, 2025 Details

RET & COM Research

radios.sourceforge.net

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…

264 visits Jan 9, 2025 Details

Roadrunner

cornfed.com

One-user, general purpose OS built on a protected memory, POSIX threads RT kernel; full kernel, device drivers, file systems, and network protocols runs in about 200 K RAM; now run…

340 visits Apr 24, 2024 Details

rtmk

rtmk.sourceforge.net

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 …

25 visits May 31, 2024 Details

RTMX, Inc.

rtmx.com

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 fea…

120 visits Aug 1, 2025 Details

S.Ha.R.K.

shark.sssup.it

Dynamic configurable kernel architecture to support hard/soft/non realtime use with interchangeable scheduling algorithms: fully modular in scheduling policies, aperiodic servers, …

23 visits May 5, 2024 Details

Open Source

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