http://www.atmel.com/dyn/products/devices.asp?family_id=607#1761

http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3879

http://www.fourwalledcubicle.com/LUFA.php

http://www.pjrc.com/teensy/

http://www.ssalewski.de/AT90USB_firmware.html.en

http://www.atmel.com/dyn/products/product_card.asp?part_id=3777

http://www.national.com/mpf/LP/LP3982.html

http://www.national.com/mpf/LM/LM340.html

http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3886