The debate on the limits and relevance of the different name generators comes with the development of social network studies. The core questions are: What are they supposed to construct? For what research question? Some procedures tend to choose a precise target with a unique name generator; others prefer to use a series of name generators. The authors discuss here some specificities and advantages of these methods for ego-centered networks. The authors then present the ''contextual'' name generator, which was developed in longitudinal qualitative panel studies in France and Québec. This tool gives access to a great variety of information focused on sociological questions. Its original design differentiates two complementary stages to distinguish the global contexts-based network from specific resource-based networks. This tool remains flexible and may be adapted to different topics.