In this paper we present affinity links as a mechanism which combines some of the advantages of the different ways that are commonly used to express relationships. We define this mechanism in terms of fuzzy relations. We introduce affinity contexts as a way of expressing contexts of relationships on a set of objects and we present operations that allow for their combination. We outline Satellite, a tool for the visualization and exploration of affinity contexts. Satellite promotes navigation by context-dependent proximity. The tool allows for the simultaneous exploration of multiple contexts and is able to track fast evolving relationships. We provide examples of the usefulness of our approach in the domains of object-oriented systems development and Hypermedia environments.