zigpy-cc libary by @sanyatuning for the zigpy project should when working add integrated native support for several inexpensive Texas Instruments based Zigbee USB sticks to Home Assistant
FYI, as I understand, zigpy-cc libary isn’t fully working yet but at least someone has started coding it.
zigpy-cc libary should in the future work with the ZHA (Zigbee Home Automation) integration for Home Assistant that @Adminiuga and @dmulcahey among others have made into very intuitive component to use and IMHO have finally managed to make Zigbee into a first-class citizen in Home Assistant
This will work by zigpy-cc library making zigpy compatible with CC2531 USB sticks and possibly also other TI CC chips if you flash them with the custom Z-Stack firmware from the Zigbee2mqtt project by @Koenkk (however this implementation is not dependent on having Zigbee2mqtt installed or running but is instead a native integration for Home Assistant so it will be very easy to get started)
@sanyatuning sorry if leaked this before you are ready to release it however the news of native support for cheap CC2531 based USB sticks was just too exciting to keep to myself