Ariel OS is an open source operating system for secure, memory-safe, low-power Internet of Things (IoT). Ariel OS supports hardware based on the main 32-bit microcontroller architectures (Cortex-M, RISC-V, and Xtensa). Ariel OS is based on Rust from the ground up. Fully leveraging the crates ecosystem, Ariel OS integrates components including Embasssy, esp-hal, smoltcp, probe-rs... and many more into a single batteries-included experience.