FreeRTOS vs. RTX Comparison


FreeRTOS	RTX Arm	+	+
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About Developed in partnership with the world’s leading chip companies over a 15-year period, and now downloaded every 170 seconds, FreeRTOS is a market-leading real-time operating system (RTOS) for microcontrollers and small microprocessors. Distributed freely under the MIT open source license, FreeRTOS includes a kernel and a growing set of IoT libraries suitable for use across all industry sectors. FreeRTOS is built with an emphasis on reliability and ease of use. With proven robustness, tiny footprint, and wide device support, the FreeRTOS kernel is trusted by world-leading companies as the de facto standard for microcontrollers and small microprocessors. With detailed pre-configured demos and Internet of Things (IoT) reference integrations, there is no need to determine how to setup a project. Quickly download, compile, and get to market faster. Our partner ecosystem provides a breadth of options including community contributions and professional support.	About The Keil RTX is a royalty-free, deterministic real-time operating system designed for ARM and Cortex-M devices. It allows you to create programs that simultaneously perform multiple functions and helps to create applications which are better structured and more easily maintained. Royalty-free, deterministic RTOS with source code. While it is certainly possible to create real-time programs without an RTOS (by executing one or more functions in a Super-loop), there are numerous scheduling, maintenance, and timing issues that an RTOS like the Keil RTX solves for you. For a more detailed comparison between RTOS and Super-loop, take a look at the advantages of using an RTOS. High-Speed real-time operation with low interrupt latency. Small footprint for resource constrained systems. Unlimited number of tasks each with 254 priority levels. Unlimited number of mailboxes, semaphores, mutex, and timers. Support for multithreading and thread-safe operation.
Platforms Supported Windows Supported Mac Not Supported Linux Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Companies and IT departments interested in an operating system solution for microcontrollers and small microprocessors	Audience Enterprises in search of a real-time operating system to create programs that simultaneously perform multiple functions
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported	Support Phone Support Supported 24/7 Live Support Not Supported Online Supported
API Offers API Supported	API Offers API Not Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing No information available. Free Version Supported Free Trial Not Supported	Pricing No information available. Free Version Not Supported Free Trial Not Supported
Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software

Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Supported Live Online Not Supported In Person Supported
Company Information FreeRTOS Founded: 2010 www.freertos.org	Company Information Arm Founded: 2005 United States www.keil.com/arm/rl-arm/kernel.asp
Alternatives VxWorks Wind River	Alternatives DuinOS
Amazon FreeRTOS Amazon	embOS SEGGER
BlackBerry QNX	MQX RTOS NXP
DuinOS	VxWorks Wind River
Apache NuttX Apache View All	Mbed OS Arm View All
Categories IoT Supported IoT Operating Systems Supported Real-Time Operating Systems (RTOS) Supported	Categories Real-Time Operating Systems (RTOS) Supported

Integrations AWS IoT Device Defender Supported Coco Code Coverage Supported Cypress Supported Golioth Supported Green Hills Optimizing Compilers Not Supported Keil MDK Not Supported MPLAB Harmony v3 Supported Pelion IoT Connectivity Supported Percepio Supported RaimaDB Supported Rapita Verification Suite Supported TimeMachine Not Supported eXtremeDB Supported fAST Dynamic Supported µVision IDE Not Supported Show More Integrations View All 11 Integrations	Integrations AWS IoT Device Defender Not Supported Coco Code Coverage Not Supported Cypress Not Supported Golioth Not Supported Green Hills Optimizing Compilers Supported Keil MDK Supported MPLAB Harmony v3 Not Supported Pelion IoT Connectivity Not Supported Percepio Not Supported RaimaDB Not Supported Rapita Verification Suite Not Supported TimeMachine Supported eXtremeDB Not Supported fAST Dynamic Not Supported µVision IDE Supported Show More Integrations View All 4 Integrations
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