Azure Sphere OS vs FreeRTOS
| Azure Sphere OS | FreeRTOS | |
|---|---|---|
| Platforms | Web | |
| Free plan | No | Yes |
| Deployment model | hybrid | |
| Supported device OS | Azure Sphere OS (custom Linux-based OS) | |
| Over-the-air updates | Yes | |
| Fleet provisioning | Yes | |
| Protocol support | TCP/IP, Wi-Fi, UART, SPI, I2C, GPIO | |
| Certificate management | Yes | |
| Device types | Microcontrollers and small microprocessors | |
| CPU architectures | 40+ processor architectures, including RISC-V and ARMv8-M | |
| Support lifecycle | LTS libraries receive security updates and critical bug fixes for two years | |
| App compatibility | Kernel ports, demos, and reference integrations; 15+ toolchains | |
| Deployment models | Embedded physical devices; cloud images not verified |
Listed together in Best IoT Operating Systems