Abstract: A server computer selects code updates to download to a client computer as follows. The server computer identifies code updates which are consistent with basic system characteristics of the client computer. Then, the server computer sends to the client computer one or more "recognizer" programs which execute in the client computer to determine whether the client computer has a version other than a current version of the consistent code updates. The client sends the results to the server computer which generates a list of those code updates which are consistent with the basic system characteristics, and represent programs that exist on the client computer for which an update would be appropriate. The server computer also identifies new data which is consistent with attributes of a user of the client computer. Then, the server computer sends to the client computer one or more recognizer programs which execute in the client computer to determine whether the client computer already has the consistent new data.

Abstract: A computer system identifies web pages of interest to a client. The system comprises a cataloging function which defines a hierarchy of subject categories, logically arranges a multitude of web pages in the categories and periodically adds web pages to the categories. The system also comprises a profile building function which receives selections of categories from a user, records the selections and responds with an identification of subcategories of each selected category. The user can make further selections from the subcategories. Alternately, the user makes a key word search and then selects data web pages from the results of the search. The profile building function records the categories of the data web pages selected by the user. Next, the user requests a list of recently added web pages of interest to the user. In response, the system identifies recently added web pages from the categories previously selected by the user and from the categories of the data web pages previously selected by the user.

Abstract: A server computer selects code updates to download to a client computer. The server computer identifies code updates which are consistent with basic system characteristics of the client computer. Then, the server computer sends to the client computer one or more "recognizer" programs or one or more addresses outside of the client computer of the one or more recognizer programs which execute in the client computer to determine whether the client computer has a version other than a current version of the identified code updates. The client sends the results to the server computer which generates a list of code updates which are consistent with the basic system characteristics, representing programs that exist on the client computer for which an update would be appropriate. Next, the server computer sends the list or information about the list to the client computer. A user at the client computer selects from the list and sends the selections to the server computer.