Downloadable computer operating software; downloadable mobile operating system software; downloadable web site development software; downloadable computer software for computer system and application development, deployment and management; downloadable virtual reality software for viewing photos and virtual tours of real estate, homes, apartments, residential rentals; downloadable software in the nature of a mobile application for viewing photos and virtual tours of real estate, homes, apartments, residential rentals; downloadable mobile applications for viewing photos and virtual tours of real estate, homes, apartments, residential rentals; downloadable virtual reality software, namely, software that allows users to experience online switching between different decoration styles of real estate, homes, apartments, residential rentals; downloadable software in the nature of a mobile application, namely, software that allows users to experience online switching between different decoration styles of real estate, homes, apartments, residential rentals; downloadable mobile applications, namely, software that allows users to experience online switching between different decoration styles of real estate, homes, apartments, residential rentals; downloadable virtual reality software, namely, software that allows users to experience online replacement of all kinds of home decoration materials; downloadable software in the nature of a mobile application, namely, software that allows users to experience online replacement of all kinds of home decoration materials; downloadable mobile applications, namely, software that allows users to experience online replacement of all kinds of home decoration materials; downloadable computer software for word processing; downloadable computer software for processing digital images; downloadable computer software for organizing and viewing digital images and photographs; downloadable computer software for creating digital animation and special effects of images; downloadable computer graphics software; downloadable software for processing images, graphics and text; downloadable computer software for use in displaying buildings, real estates, houses; downloadable computer software for use in displaying constructions of buildings, real estates, houses; downloadable computer software for use in displaying building exterior environment; application for use in displaying buildings, real estates, houses; application for use in displaying constructions of buildings, real estates, houses; application for use in displaying building exterior environment; downloadable computer software for accessing an online marketplace for sellers and buyers in the field of residential real estate; application for image processing; application for accessing an online marketplace for sellers and buyers in the field of residential real estate