Amazon.com: Waveshare Atmel-ICE Basic Kit Powerful Development Tool for Debugging and Programming Atmel SAM and AVR Microcontrollers with Adapters and Cables : Electronics
Atmel Studio 7.0 Download (Free) - atmelstudio.exe
Microchip To Acquire Atmel For $3.56 Billion | Hackaday
Atmel Launches High-Performance Debugging Tool with Advanced Power Visualization for Ultra-Low-Power Designs
Using ATMEL Studio 7 for Arduino Development | µC eXperiment