Platform as a service (PAAS) featuring computer software platforms for real estate; Software as a service (SAAS) services featuring software for searching, retrieving, viewing and providing information related to real estate markets, trends, properties, listings, pricing, and open houses; Software as a service (SAAS) services featuring software for advertising, information, reviews, and recommendations in the field of real estate services; Software as a service (SAAS) services featuring software for real estate brokerage services and real estate transaction services; Software as a service (SAAS) services featuring software using artificial intelligence (AI) for real estate services; Software as a service (SAAS) services featuring software using artificial intelligence (AI) for searching, retrieving, viewing and providing information related to real estate markets, trends, properties, listings, pricing, and open houses; Software as a service (SAAS) services featuring software using artificial intelligence (AI) for advertising, information, reviews, and recommendations in the field of real estate services; Providing on-line non-downloadable software for researching real estate listing, soliciting and selecting real estate purchase offers, managing the real estate sales process, brokering real estate sales, and closing real estate sales; Providing online non-downloadable computer software platforms for database management in the field of real estate