Downloadable computer application software for use by individuals on a computer or mobile device for audience engagement and participating in interactive presentations created by a presenter, namely, for electronically asking questions to presenters, for live electronic voting on questions given by presenters, for evaluation of events and presenters, and for searching for event sessions, speakers, and presentations; Downloadable computer application software for use by presenters and event managers on a computer or mobile device for creating and managing events, sessions, speakers and presentations, for creating presentations with interactive questions for an audience to vote on, for management and presentation of specialized presentation software files, for moderating and facilitating audience questions during presentations, for post-event and post-presentation data reporting, for storing and accessing presentations, for searching a database of user generated questions, and for archiving of past event or presentation reports, for granting access and sending presentations to other users, all of which excludes downloadable software for development of customized mobile applications featuring portfolios, product catalogs, annual reports and other sales, marketing and training collateral for mobile devices, and cloud-based, non-downloadable software as a service (SAAS) services for development of customized mobile applications featuring portfolios, product catalogs, annual reports and other sales, marketing and training collateral for mobile devices