The file check daemon monitors files according to rules defined in configuration files. When a file is considered stable (due to its age, presence of a flag file, etc.) then it gets copied to a new location. Rotating backups of the destination file can be made and owner, group and permissions can be specified for the destination. Some examples of where this utility has been found to be useful are: Moving files out of an incoming FTP directory in a timely manner. Moving files uploaded to a web server into directories with different user/group. This lets the administrator run the web server as a non-root user and accept uploads using web server based authentication and then move the files to a more secure area after the transfer. The details of how to determine whether a file is stable and what to do with it once it is are defined in a "Filespec" configuration file. There is a separate filespec for each file that will be monitored which means that each file can have unique behavior associated with it.
Snarf is a simple utility that is similar to wget, curl, ncftp, lynx, and fetch. Its main advantage is its small size (it's ideal for using on a rescue disk). It is also full featured, supporting ftp and http resume, http and ftp authentication, http redirect, proxies, SOCKS, gopher, progress indicators, and it uses configure.
UDPCast allows to send data simultaneously to many destinations on a local net. This can for instance be used to install entire classrooms of PCs at once. The advantage over using other methods (nfs, ftp, whatever) is that udpcast uses Ethernet's multicast abilities: it won't take longer to install 15 machines than it would to install 2. The tool comes with a busybox bootdisk for easy loading of the tool. However, udpcast can also be started from the command line of an already installed system, and can be used for other purposes than just system installation.
PHP FTP Client is an FTP client that is useful for allowing people behind a firewall access to FTP without opening the FTP ports inside the firewall. It could be used as a front end to a local FTP server, and therefore allow the administrator to provide access to the FTP server only from localhost.