github.com/rweather/arduinolibs/, Arduino Cryptography Library
github.com/rweather/arduino-projects/, A collection of my libraries and examples for Arduino.
github.com/rweather/lightweight-crypto, NIST Lightweight Cryptography Primitives
Arduino Cryptography Library Documentation
ArduinoLibs Documentation
Interactive shell via UART serial for Arduino?
LCD
http://arduino.esp8266.com/stable/package_esp8266com_index.json
LiquidCrystal I2C
marcoschwartz/LiquidCrystal_I2C
old:
fdebrabander/Arduino-LiquidCrystal-I2C-library
LiquidCrystal_I2C.h library – for Arduino IDE 1.6.x
Arduino LiquidCrystal_I2C library