Vexrobotics
http://www.vexrobotics.com/

Sparki
http://arcbotics.com/products/sparki/

Modrobotics
http://www.modrobotics.com

Lego Mindstorms and Robots
http://www.lego.com/en-us/mindstorms

Ozobot
http://ozobot.com/products

Sphero
http://www.sphero.com/

BB8
http://www.sphero.com/starwars

Ollie
http://www.sphero.com/ollie

Rover
http://www.snapcircuits.net/products/product_details/snap_rover_®=Mzcz

Finch Robot
http://www.finchrobot.com

Make Wonder
https://www.makewonder.com/

MakeBlock
https://www.makeblock.com