Mobile ad hoc networks (MANET) oer a convenient basis toward realization of pervasive computing, due to its ease of deployment and inherent support for anytime, anywhere network access for mobile users. However, the development of applications over such networks is faced by the challenge of network dynamics attributed to node mobility and the scalability issue. Group management poses as a promising paradigm to ease the development of distributed applications for dynamic, mobile networks. Specically, group management makes transparent the failures due to node mobility and assembles mobile nodes to meet target functional and non-functional properties. Various network-level grouping schemes over MANET have been investigated over the last couple of years. In this paper, we introduce the design and implementation of a generic group service for MANET, dened with respect to the various attributes of relevance. Generic group management is further demonstrated with its support of scalable service discovery in MANET.