Downloadable computer software for members of a workplace or residential community to participate in social networking, engage in virtual communities, manage their community membership, make rent or license payments, and sign up for and manage use of amenities such as library, media room, theater, gym, concierge, restaurants, cafes, and kitchen; Downloadable computer software for making restaurant reservations, placing orders for delivery of food to residences, for organizing parties and events; Downloadable computer software for signing up for classes at fitness and health clubs and exercise facilities and for making appointments for treatments at health spas; Downloadable visitor registration computer software that records entry and exit of visitors and collects visitor information; Downloadable visitor registration computer software that enables preparation and distribution of signed electronic visitor registration documents; Downloadable visitor registration computer software that enables the printing of visitor badges with photos; Downloadable visitor registration computer software that notifies others of the arrival of a visitor; Downloadable visitor registration computer software that prepares reports of visitors