I don't know about Bluetooth library.
About NetX, it's a commercial product and royalty is required normally.
So in order to use it free by WICED customer, it needs to be provided as a binary image.
If you would like to have source code, you can choose FreeRTOS/LwIP.
Ok thanks, let's see if someone can comment on the Bluetooth stack.
Our BLE stack is in ROM and not available as source.