Abstract: A system for real-time interactive presentation, the system communicatively coupled to a network for access by a plurality of user devices comprising a database to store information relating to a plurality of presentations, at least one processor executing instructions stored in non-transitory memory that cause the processor to: receive a presentation in a first format from a presenter user device, convert the presentation to an HTML5 format, embed at least one HMTL5 interactive object into the converted presentation, store the converted presentation including the at least one HTML5 interactive embedded object in the database, upon a request received from a first user device for the converted presentation, transmit the converted presentation including the at least one HTML5 interactive embedded object to the first user device, wherein the presentation including the at least one HTML5 interactive embedded object is rendered for viewing on a display of the first user device, and receive and store first user inp

Abstract: A method of multicast data transmission from a web server to client terminal devices using a wireless local area network (WLAN) includes, before transmitting data from the web server, data preprocessing including data object type identification, forming of one or several logical channels in the overall bandwidth of a WLAN for each data object type, fragmentation of data objects into multiple data packets, and marking of each data packet with a header which contains at least transmission parameters. Data packets with headers are transmitted within the logical channels by data type, in a cyclic retranslation mode or by duplicating data packets and transmitting copies with delay.