At-RTOS is an open and user-friendly real-time operating system (RTOS) for the embedded controller (EC).

At-FSM is an open and user-friendly embedded Finite State Machine (FSM) included the Primitive State Machine (PSM) and Hierarchical State Machine (HSM).

It provides an open and user-friendly board supported interface for the embedded controller peripheral compatibility.

It helps to manage the At-RTOS, At-FSM and At-BSI repositories.