A list of the 23 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
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
DMXSerial Enables DMX communication using the built-in serial port for Arduino boards.
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.
Melt7SegLcd Melt 7-segment LCD Arduino library.
MFRC522 Arduino RFID Library for MFRC522 (SPI)
NeoPatterns Patterns for NeoPixel strips and matrixes including the patterns of the NeoPattern example by Adafruit.
OneWireNg Arduino 1-wire service library
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/Genuino 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.
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
Tuyav Communicate with the Tuya IoT module
Tuyav Communicate with the Tuya IoT module