Abstract: A computer-implemented vault centrally archives an application from a client. Each application may be formed from one or more files, and each application has a unique meta description for reconstructing the application using the one or more files. The vault has one or more files which may be shared among applications; an access controller for allowing the client to retrieve a file from the vault based on the meta description; and a post controller for allowing the client to store a single instance of a uniquely indexed file based on the meta description.

Abstract: A system maintains a first computer using a second computer and a central computer by: receiving a request for maintenance from a first computer; opening first and second secured connections to the first and second computers through the central computer; transferring a request for data from the second computer; storing data and a destination instruction sent from the second computer in a central computer buffer; and forwarding the buffered data to the first computer.