MicroPython is developed using git for source code management, and the master repository can be found on GitHub at github.com/micropython/micropython.
The full source-code distribution of the latest version is available for download here:
Daily snapshots of the GitHub repository (not including submodules) are available from this server:
Firmware for various microcontroller ports and boards are built automatically on a daily basis and can be found below.
Port: cc3200, esp32, esp8266, mimxrt, nrf, renesas-ra, rp2, samd, stm32
Feature: Audio Codec, BLE, Battery Charging, CAN, Camera, DAC, Display, Dual-core, Environment Sensor, Ethernet, External Flash, External RAM, Feather, IMU, JST-PH, JST-SH, LoRa, Microphone, PoE, RGB LED, SDCard, Secure Element, USB, USB-C, WiFi, microSD, mikroBUS
Vendor: Sparkfun [x]
MCU: RA6M5, cc3200, esp32, esp32c3, esp32s2, esp32s3, esp8266, mimxrt, nrf51, nrf52, nrf91, ra4m1, ra4w1, ra6m1, ra6m2, ra6m5, rp2040, samd21, samd51, stm32f0, stm32f4, stm32f7, stm32g0, stm32g4, stm32h7, stm32l0, stm32l1, stm32l4, stm32wb, stm32wl