: This paper presents SAMi, a context aware Information sharing Middleware, for a dynamic pervasive computing environment such as a Mobile Ad-hoc NETworks (MANET). SAMi can be used by co- located devices to share information according to the context of users and their environment. It applies latent semantic m odeling techniques and adopts techniques from service discovery to search files efficiently. A preliminary prototype has been deve loped to simulate MANETs and to implement the middleware. A number of experiment s have been performed to evaluate major features of SAMi. Based on these experiments, we found SAMi a promising middleware to facilitate information exchange among co-located devices.