bea08394__commercial_licensing_options___FreeRTOS_Open_Source_License
[0] Do I have to open source my application code that makes use of the FreeRTOS services? [OpenRTOS Commercial License] No [FreeRTOS Open Source License] 
No, as long as the code provides functionality that is distinct from that provided by FreeRTOS
FreeRTOS open source licensing, FreeRTOS license description, FreeRTOS license terms and OpenRTOS commercial licensing options.
FreeRTOS Open Source License