Stars
Arduino library for controlling single-wire LED pixels (NeoPixel, WS2812, etc.)
An Arduino port of the http://www.tinkerer.eu/AVRLib/nRF24L01 library.
An event handling system for Arduino. It allows you to register "listeners" and post events for them. Designed to be interrupt safe.
Simple framework for allowing Arduino applications / examples / libraries to be built in a modular, event-driven fashion. Aiko enables more events and less delay()s !
Arduino library to support SHT1x-series (SHT10, SHT11, SHT15) temperature / humidity sensors from Sensirion
ARDUINO LCD menu library: short user code to manage complex menu structures
Arduino SPI driver for LPD6803 based LED Modules
Arduino library for the DHT22 Temperature & Humidity Sensor Module
Arduino library for Nokia 5510/3310 type displays.
an arduino library for detecting audio levels and beats