rsynchelper helps you use the mirroring program rsync. rsynchelper makes it easier for groups of servers to cooperate in mirroring. rsynchelper makes it easier to make your content available for others to mirror, makes it easier to mirror someone else's content, and it automates the maintenance of an accurate list of who is maintaining which content.
offmirror is a utility for mirroring a tree of files. Unlike other mirroring tools, it works offline and does not require a network or some kind of direct connect between the source and the destination. offmirror makes it possible to place all the data that is needed to synchronize a file tree onto a removable storage medium. Offmirror works with regular files, directories, symbolic links, and special files.
rsync-bc (rsync backup client) is a stripped-down version of rsync. The idea behind rsync-bc is to provide a simple client that only supports sending data. Receiving, local file transfers, and daemon/server modes have been disabled. No destructive file operation functions will be present in a binary.
wgrab is a Perl script for for retrieving Web documents from the command line. It allows you to use date-based and/or number-based patterns to specify the documents to download. Regular expressions can be used to restrict which references are to be followed when performing recursive retrieval.
MultiLoad is a load balancer that redirects HTTP requests to pre-defined servers/locations. It gives the provider a way to balance the traffic and hides the real download location. It allows you to manage different version of each download. It is also a load balancing server extension. You can distribute files on some servers so that a downloaded file can be loaded form different servers. These servers can have different priorities to control the active traffic.