A list of the 6 libraries in the architecture atmelsam.

avdweb_VirtualDelay Allows using (multiple) delays without blocking code execution. Arduino Uno and Zero.
Easy MFRC522 Simplified reading/writing data chunks from/to RFID tags with MFRC522 module.
Mcp3208 Arduino library for the MCP320x 12 bit ADC family.
MFRC522 Arduino RFID Library for MFRC522 (SPI)
SAMDUE_Slow_PWM This library enables you to use ISR-based PWM channels on an Arduino SAM_DUE board to create and output PWM any GPIO pin.
SAMDUE_TimerInterrupt This library enables you to use Interrupt from Hardware Timers on an SAM-DUE-based board