eMule (ver 0.50a) Abandoned Freeware eMule is a P2P file-sharing client. It connects to both the server-centric eDonkey and the serverless Kad networks. eMule helps you save bandwidth by transmitting data in zlib-compressed form. eMule checks files for corruption during downloads to confirm that they are error free, helping speed up the correction of corrupted chunks so that they do not need to be re-downloaded entirely.