Libchop is a set of utilities and library for data backup and distributed storage. Its main application is chop-backup, an encrypted backup program that supports data integrity checks, versioning at little cost, distribution among several sites, selective sharing of stored data, adaptive compression, and more. The library itself, which chop-backup builds upon, implements storage techniques such as content-based addressing, content hash keys, Merkle trees, similarity detection, and lossless compression. It makes it easy to combine them in different ways. The ‘chop-archiver’ and ‘chop-block-server’ tools, illustrated in the manual, provide direct access to these facilities from the command line. It is written in C and has Guile (Scheme) bindings.
Backerup is a robust remote backup system which can operate over relatively slow networks. File transfers are done using rsync, and snapshots are taken using hardlinks. Bandwidth can be controlled per host and per network. Priorities can be set on backup groups, as well as requesting minimum ages for backups.
XCloner is an application to backup and restore component designed for PHP/MySQL Web sites. It can work as a native plugin for WordPress and Joomla! or as a standalone application. XCloner was designed specifically to generate custom backups of any LAMP Web site through custom admin inputs. It can restore backups to any other location with the help of the automatic restore script, independent from the main package. XCloner uses standard formats like tar and MySQL, allowing backups to be restored in a variety of ways.
rocknroll (Rsync fOr baCKup and Roll) is an incremental backup maker based on rsync. It backs up a remote directory tree to a destination directory on the local host. For this backup, it manages a set of archives named tag.1, tag.2, etc. Using the famous "link-dest" option of rsync, it keeps only the difference between the different archives.
CryptBackup is an encrypted backup application for Linux desktop users. It allows even a layperson to backup their home directory (including the desktop) on an encrypted external device with just a few clicks. Even the setup is only to choose the external device (such as an external hard drive) and to set a password.