The World Wide Web is increasingly becoming the preferred repository of information. The strength of this information infrastructure is also its weakness. Faced with the chaos of millions of places to go and thousands of places to remember having been, the thousands of new Web users who join every day, need a helping hand. The aim of this paper is, to highlight possible components of technologies supporting web navigation and the maintenance of indexes to web resources. The BASE framework is suggested as a means of understanding the pragmatic technological choices, and six experimental prototypes are presented and discussed. The prototypes support various aspects of bookmark maintenance and information filtering.