CircuitPython supports a number of microcontroller families. Support quality for each varies depending on the active contributors for each port.
Adafruit sponsored developers are actively contributing to atmel-samd, mimxrt10xx, nrf and stm ports. They also maintain the other ports in order to ensure the boards build. Additional testing is limited.
.. toctree::
:maxdepth: 2
../ports/atmel-samd/README
../ports/broadcom/README
../ports/cxd56/README
../ports/espressif/README
../ports/litex/README
../ports/mimxrt10xx/README
../ports/nrf/README
../ports/raspberrypi/README
../ports/silabs/README
../ports/stm/README
../ports/unix/README