Open Source RTOS
2024-08-24 02:10:37
| Name | License | Platforms | Description | Last updated |
|---|---|---|---|---|
| FreeRTOS | Modified GPL | MSP430 ARM AVR ColdFire PIC x86 | FreeRTOS is a popular real-time operating system for embedded devices, being ported to 31 microcontrollers. It is distributed under the GPL with an optional exception. | 2015-Oct-16 |
| Contiki | BSD | MSP430 ARM AVR 8051 | Contiki is an open source operating system for the Internet of Things. Contiki connects tiny low-cost, low-power microcontrollers to the Internet. | 2015-Aug-26 |
| ChibiOS/RT | Modified GPL | MSP430 AVR | ChibiOS is a complete development environment for embedded applications including RTOS, an HAL, peripheral drivers, support files and a development environment. | 2016-Jan-23 |
| RTEMS | GPL | ARM x86 MIPS PowerPC m68k | RTEMS is an open source RTOS that supports open standard application programming interfaces such as POSIX. It is used in space flight, medical, networking and many more embedded devices. | 2015-Sep-11 |
| NuttX | BSD | ARM AVR 8051 x86 | NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 32-bit microcontroller environments, the primary governing standards in NuttX are Posix and ANSI standards. | 2015-Oct-01 |
| RT-Thread | GPL | x86 MIPS PowerPC | RT-Thread is an open source real-time operating system for embedded devices from China. RT-Thread RTOS is a scalable real-time operating system: a tiny kernel for ARM Cortex-M0, Cortex-M3/4, or a full feature system in ARM Cortex-A8, ARM Cortex-A9 DualCor | 2015-Feb-01 |
| RTAI | GPL | ARM x86 PowerPC x86_64 m68k | RTAI is the RealTime Application Interface for Linux - which lets you write applications with strict timing constraints for your favourite operating system. The RTAI distribution includes RTAI-Lab, a tool chain to convert block diagrams into RTAI executab | 2015-Jan-28 |
| Xenomai | GPL | ARM x86 PowerPC | Xenomai is a real-time development framework cooperating with the Linux kernel, in order to provide a pervasive, interface-agnostic, hard real-time support to user-space applications, seamlessly integrated into the GNU/Linux environment. | 2014-Sep-25 |
| TI-RTOS Kernel | Other | TI-RTOS Kernel (formerly known as SYS/BIOS™) is an advanced, real-time kernel for use in a wide range of DSPs, ARMs, and microcontrollers. | 2015-Aug-19 | |
| Atomthreads | BSD | AVR | Atomthreads is a free, lightweight, portable, real-time scheduler for embedded systems. | 2015-Feb-24 |
| Erika Enterprise | Modified GPL | MSP430 ARM AVR | Erika Enterprise is the first open-source Free RTOS that has been certified OSEK/VDX compliant!. | 2015-Mar-07 |
| Freescale MQX | Other | ARM ColdFire | The Freescale MQX Real-Time Operating System (RTOS) provides real-time performance within a small, configurable footprint. The RTOS is tightly integrated with the latest 32-bit MCUs and MPUs from Freescale and is provided with commonly used device drivers | 2015-Mar-07 |
| Fusion Embedded RTOS | Other | ARM PowerPC | The Fusion Embedded RTOS (Real-Time Operating System) from Unicoi Systems is a Real-Time OS designed and optimized for networking and media-centric processors. | 2015-Mar-08 |
| MARK3 | BSD | AVR | Mark3 is a sophisticated, modern RTOS and application development platform, targeted towards a growing list of today's most compelling embedded devices. | 2015-Mar-08 |
| Nut/OS | GPL | AVR ColdFire | Nut/OS is an intentionally simple RTOS for the ATmega128, which provides a minimum of services to run Nut/Net, the TCP/IP stack. | 2014-Nov-20 |
| RIOT | Modified GPL | MSP430 AVR | RIOT is an operating system designed for the particular requirements of Internet of Things (IoT) scenarios. | 2015-Dec-04 |
| distortos | Mozilla Public License Version 2.0 | ARM | Distortos is an advanced RTOS written in C++11. | 2016-Feb-13 |
| BitThunder | GNU GPL version 2.0 | ARM | A Reliable Real-Time Operating System & Application Framework. | 2015-Dec-13 |
| DSPnano | Other | The DSPnano POSIX RTOS supports general purpose MCU, DSP and DSC 16 bit architectures with as little as 1K of RAM and 6K of flash. | 2015-Nov-30 | |
| Unison | Other | Unison supports general purpose microcontrollers (MCUs), digital signal processors (DSPs), FPGAs, microprocessors (MPUs) and digital signal controllers (DSCs) 32 bit architectures with as little as 1K of RAM and 2K of flash. | 2015-Nov-30 | |
| CoActionOS | Other | CoActionOS is a real-time, embedded operating system for the ARM Cortex-M3 architecture. | 2014-Nov-14 | |
| BRTOS | MIT | MSP430 AVR ColdFire PIC | BRTOS is a lightweight preemptive real time operating system designed for low end microcontrollers. | 2014-Dec-14 |
RTOSs not under active development ( Not updated for more than 2 years )
| Name | License | Platforms | Description | Last updated |
|---|---|---|---|---|
| Femto OS | GPL | AVR | Femto OS: RTOS for small MCU's like AVR. | 2012-Dec-09 |
| BeRTOS | Modified GPL | AVR x86 PowerPC x86_64 | BeRTOS is a real time open source operating system supplied with drivers and libraries designed for the rapid development of embedded software. | 2011-Aug-08 |
| DuinOS | Other | AVR | DuinOS is a small multithreading real time operating system (RTOS), based on the FreeRTOS kernel, for Arduino compatible boards. | 2012-Jan-08 |
| eCos | GPL | ARM MIPS PowerPC | eCos is a free open source real-time operating system intended for embedded applications. The highly configurable nature of eCos allows the operating system to be customised to precise application requirements, delivering the best possible run-time perfor | 2013-Aug-25 |
| FunkOS | Other | MSP430 AVR | FunkOS is an RTOS for 8-32 bit MCUs including AVR, MSP430, and Cortex M3. Both C and C++ kernels avaiable. Key features include preemption, periodic events, device drivers, and mutex/semaphores. Includes a variety of graphics and filesystem middleware. | 2013-Apr-23 |
| Prex | BSD | ARM x86 | Prex is an open source, royalty-free, real-time operating system for embedded systems. It is designed and implemented for resource-constrained systems that require predictable timing behavior. The highly portable code of Prex is written in 100% ANSI C bas | 2009-Oct-01 |
| scmRTOS | MIT | MSP430 AVR | scmRTOS stands for Single-Chip Microcontroller Real-Time Operating System. | 2012-Dec-01 |
| TNKernel | GPL | MSP430 ColdFire | TNKernel is a compact and very fast real-time kernel for the embedded 32/16/8 bits microprocessors. | 2013-Jun-06 |
| Protothreads | BSD | AVR 8051 | Protothreads are extremely lightweight stackless threads designed for severely memory constrained systems. | 2005-Apr-08 |
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