A Web based application system for managing a trip. The Web based application system for managing a trip includes a graphical user interface for allowing a client computer coupled to a network to access a server computer to retrieve and store data relating to the trip therewith, one or more interactive windows functioning with the graphical user interface to perform the retrieving and the storing such that the data include a Web document and the graphical user interface and the interactive windows include a first application, and a wireless device interface for allowing a portable device wirelessly coupled, with a cellular telephone system, with the network to access the Web document. The portable device includes a cellular telephone functionality, a geo-locating functionality and a processor for processing the Web document. The processing helps manage the trip. Downloading and processing the Web document include a second application.