Downloadable software for creating, sharing, and managing virtual business cards, online personal and professional profile information, and directory information; Downloadable software for placing digital advertisements and tracking their effectiveness; Downloadable software for event management and enabling event attendees to access event information, namely, admission tickets and codes, schedules, speaker notes and biographical information, and slides and audiovisual data; Downloadable software for managing membership directory information and facilitating the exchange of digital information between membership programs and their members; Downloadable software for enabling businesses to communicate with customers via text, audio, and video messaging and conferencing