A list of the 37 libraries in the architecture megaavr.

ArduinoBLE Enables BLE connectivity on the Arduino MKR WiFi 1010, Arduino UNO WiFi Rev.2, Arduino Nano 33 IoT, and Arduino Nano 33 BLE.
ArduinoECCX08 Arduino Library for the Atmel/Microchip ECC508 and ECC608 crypto chips
Arduino_AVRSTL A port of ArduinoSTL Arduino library.
Arduino_ConnectionHandler Arduino Library for network connection management (WiFi, GSM, NB, [Ethernet])
AVR-context This library provides a low-level facility for context switching between multiple threads of execution and contains an implementation of asymmetric stackful coroutines on an AVR micro-controller.
BeaconNano Create a Beacon from an Arduino Nano Ble
BLE-MIDI BLE-MIDI I/Os for Arduino
DAC7611 A library that makes interfacing the DAC7611p a breeze.
DMXSerial Enables DMX communication using the built-in serial port for Arduino boards.
Easy MFRC522 Simplified reading/writing data chunks from/to RFID tags with MFRC522 module.
EEPROMWearLevel EEPROMWearLevel reduces EEPROM wear by writting a new value to an other EEPROM location.
IRremote Send and receive infrared signals with multiple protocols
Infrared An object oriented library for sending, receiving, generating, and decoding IR signals on the Arduino.
IRMP Receive and send infrared signals.
MCP3202 Used to interface the 12 bit ADC MCP3202 by Microchip.
megaAVR_Slow_PWM This library enables you to use ISR-based PWM channels on an Arduino megaAVR board, such as UNO WiFi Rev2, AVR_Nano_Every, etc., to create and output PWM any GPIO pin.
megaAVR_TimerInterrupt This library enables you to use Interrupt from Hardware Timers on an Arduino megaAVR board, such as UNO WiFi Rev2, AVR_NANO_EVERY, etc.
Melt7SegLcd Melt 7-segment LCD Arduino library.
MFRC522 Arduino RFID Library for MFRC522 (SPI)
MMA8653 Allows reading the MMA8653 accelerometer.
NeoPatterns Patterns for NeoPixel strips and matrixes including the patterns of the NeoPattern example by Adafruit.
OneWireNg Arduino 1-wire service library. OneWire alternative.
Rocket Scream LowPowerAVRZero Low power management for MegaAVR 0-series MCU.
Rocket Scream RTCAVRZero Minimalistic RTC (Real Time Counter) implementation for MegaAVR 0-series MCU.
Servo Allows Arduino boards to control a variety of servo motors.
ServoEasing Enables smooth servo movement. Linear as well as other (Cubic, Circular, Bounce, etc.) ease movements for servos are provided. The Arduino Servo library or PCA9685 servo expanders are supported.
SmoothLed Arduino library for FadeCandy style control of single-wire-based LED neopixels and WS2812B strips with megaTinyCore.
Talkie Speech library for Arduino. Generates speech from a fixed vocabulary encoded with LPC.
Taskrunner Allows arduino to run scheduler which can run functions at specific frequency
ThingSpeak ThingSpeak Communication Library for Arduino, ESP8266 & EPS32
ThingSpeak_asukiaaa An API manager for ThingSpeak
TinyMegaI2C An efficient optimised i2c library for new ATTINY series uCs
Tuyav Communicate with the Tuya IoT module
Tuyav Communicate with the Tuya IoT module
U8glib-HAL A library supporting monochrome TFTs and OLEDs, specifically for use with Marlin Firmware.
U8glib-HAL A library supporting monochrome TFTs and OLEDs, specifically for use with Marlin Firmware.
Watchdog Watchdog resets the device if the timer expires before the watchdog is reset.