Azure Sphere OS vs Micrium OS
| Azure Sphere OS | Micrium OS | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Web | Linux, macOS, Windows |
| Free plan | No | Yes |
| Deployment model | hybrid | edge |
| Supported device OS | Azure Sphere OS (custom Linux-based OS) | Micrium OS; runs on Silicon Labs EFR32 and EFM32 devices |
| Over-the-air updates | Yes | — |
| Fleet provisioning | Yes | — |
| Protocol support | TCP/IP, Wi-Fi, UART, SPI, I2C, GPIO | TCP/IP, IPv4, IPv6, USB, CAN; Bluetooth, Connect, Wi-SUN, Zigbee stack support |
| Certificate management | Yes | — |
Both are listed in Best IoT Operating Systems. On Freedom251, Micrium OS scores higher on our published basis.