Ecovacs Robotics, a robot manufacturer in China, has developed a new robot very similar to the iRobot that cleans your floors. Only these clean windows.
It’s got a catapillar-like suction cup feet that scoot along your window. Just place the robot in the center of your window and it senses the corners and cleans the window, streak-free.
There are two models availible, for $300.00 and $400.00.