I'm not sure what "platform" refers to. Maybe I'm misunderstanding, but are you asking about alternative firmware for the nrf52832 chips? There's arduino of course, and then there's adafruit's circuitpython. You can also work with the nordic sdk directly.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I'm not sure what "platform" refers to. Maybe I'm misunderstanding, but are you asking about alternative firmware for the nrf52832 chips? There's arduino of course, and then there's adafruit's circuitpython. You can also work with the nordic sdk directly.