Many challenges exist in the design of a good distributed file sharing system. Transporting huge files over the network can create latency and sluggish performance. Moreover, scalability is another issue. There is no absolute software that can transfer files between various platforms and devices and functions in all types of networks. In this thesis, we first describe several exiting file sharing protocols. We then introduce the terms and definitions for designing such system, and finally present an architecture and implementation of an efficient distributed file sharing system. The idea is to employ the Bittorrent protocol along with a tracker replicating procedure to overcome several issues in current applications and allow for file sharing in mobile, ad-hoc wireless networks. Such an application eliminates the single point of failure issue of the tracker in case the tracker crashes and thus, outperforms the existing file sharing applications.