Korean manufacturer Microrobot has released an UBOT. It’s cleaning robot similar to Roomba. Hovewer, unlike the Roomba, the UBOT is only intended for use on hard floors. A higher-end model is also available that features a “2D barcode navigation system,” which promises to clean rooms more efficiently.
The UBOT lacks some features which Samsung VC-RS60H has, for example. But I’m sure it’ll find its buyers.