Abstract: Methods for efficient download of a data package and a client device and server that may implement such methods are disclosed. The client device sends an inventory identifying existing stored content packages to the download server. The download server identifies portions of the requested data package already corresponding to content elements already stored on the client device, and sends information to the client device indicating which portions of the requested data package are already stored on the client device. The client device gathers the already-stored portions of the requested data package and requests a remaining portion of the requested data package from the download server. The download server receives the request for the remaining portion of the requested data package and sends the remaining portion to the client device.

Abstract: Methods for efficient download of a data package and a client device and server that may implement such methods are disclosed. The client device sends an inventory identifying existing stored content packages to the download server. The download server identifies portions of the requested data package already corresponding to content elements already stored on the client device, and sends information to the client device indicating which portions of the requested data package are already stored on the client device. The client device gathers the already-stored portions of the requested data package and requests a remaining portion of the requested data package from the download server. The download server receives the request for the remaining portion of the requested data package and sends the remaining portion to the client device.

Abstract: Embodiments of the present invention use a web browser on a client and a file transfer server to transfer files over a wide-area network (WAN). The files are transferred from the client to the server or vice versa. The server transfers the file to a remote server via the WAN. Because the file transfer over the WAN is server-based, the client can handle its end of the file transfer process using a conventional web browser without special file transfer software.