zsync2: zsync2 (client-side implementation of the rsync algorithm) zsync2: zsync2: A rewrite of the advanced file download/sync tool zsync. zsync2: zsync is a file transfer program. It allows you to download a file zsync2: from a remote web server, where you have a copy of an older version of zsync2: the file on your computer already. zsync downloads only the new parts zsync2: of the file. It uses the same algorithm as rsync. zsync2: zsync2: zsync2: zsync2: