PHP Tarbackup is a simple class that allows backing up an entire Web site. It automatically works around timeout limits by splitting the job into multiple requests, allows tarball archive creation and updates, and comes with the Veloce script, which is very useful to automatically unpack tar.gz archives remotely and skip long waiting times due to FTP uploads.
S3 browser is a Web-based application for managing your files stored in Amazon S3 storage service. It supports uploading both from the server and through the browser, deleting existing files, organizing them into directories (buckets), and so on. It provides full UTF-8 support for filenames.
Backup Monitor is an rsync backup front-end with a Web interface, which emails reports with an attached summary or logfile. Its configuration system is simple to use and can back up single servers or entire server farms from a single machine. Custom email tags can be used to sort responses in your mail reader.
myBackware is a set of scripts that create a regular set of database dump files for the disaster recovery of MySQL servers. It uses MySQL's mysqldump to create backups as either a filesystem-stored snapshot or as an email attachment. Either method has the option to compress and GPG-encrypt the dump file.
php_db2util is a module that extends PHP with mass data movement functions. It supports connecting to a DB2 server, loading data from a client or server with a replace option or insert option, and exporting data from a table to a client. It also allows the runstats utility to be run to recreate indexes.