Littlebirdelectronics.com
Shieldlist.org
Libelium.com
Adafruit.com
Sparkfun.com
Seeedstudio.com
Bricogeek.com
Watterott.com
Freetronics.com
Cutedigi.com
Circuitsathome.com
Hacktronics.com
Dangerousprototypes.com
Letsmakerobots.com
Cooking-hacks.com
Switch-science.com
Emartee.com
Epictinker.com
Practicalarduino.com
Buglabs.net
Openpilot.org
Opencores.org
Romotive.com
Wvshare.com
Arduinodev.com
Electrodragon.com
Cerebralmeltdown.com
Extremecircuits.net
Open-electronics.org
Jeremyblum.com
Aeroquadstore.com
Canakit.com
Element14.com
Dfrobot.com
Roboticsindia.com
Fritzing.org
Hwkitchen.com
Tinkerforge.com
Moderndevice.com
Freeduino.org
Multilogica-shop.com
Nuelectronics.com
Ruggedcircuits.com
Bhashatech.com
Opengpstracker.org
Qi-hardware.com
Robotpower.com
Nabduino.com
Protocentral.com
Tigoe.net