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The best Azure Sphere OS alternatives
The rest of Best IoT Operating Systems, in this site's order: each with what it costs, where it runs and its record score.
OpenWrt suits users who want to customize embedded devices, particularly wireless routers, and are familiar with GNU/Linux and basic networking.
NuttX suits developers building software for embedded boards and devices across its supported processor architectures.
Contiki-NG suits developers building low-power IoT devices with constrained memory and standard network protocols.
Mynewt is for developers building embedded applications for supported microcontrollers.
FreeRTOS suits developers building software for microcontrollers and small microprocessors, including teams that need support for multiple processor…
PX5 RTOS suits developers of resource-constrained embedded systems, particularly in safety-critical automotive, industrial, medical or rail settings.
It suits teams building embedded products that need real-time behavior, fault recovery, POSIX portability, and defined processor support.