Bacula : An open source network backup solution that allows user to manage backup, recovery, and verification of data across a network of computers of various types. It is comparatively easy to use and effective solution, and offers lot of features for advanced storage management that make it easy to find and recover lost or damaged files.
Amanda : A well known backup solution that allows the system administrator to set up an individual master backup server to backup multiple hosts over networks to disks. It uses indigenous services and formats it (for ex. Dump or GNU tar). Even, it is very efficient to take backup of an extensive numbers of servers and workstations that are running on multiple versions of Linux/Unix.
Rdiff- It take backup to one directory to another, potentially over a network. The point directory ends up a copy of the source directory, but extra reverse diffs are stored in a special subdirectory of that point directory, so you can still recover files that lost some timers ago. The main theme behind this is to interact the best features of a mirror and an incremental backup. Rdiff keep up the subdirectories, hard links, dev files, permissions, uid/gid ownership, modification times, extended attributes, acls, and resource forks as well. In addition, backup from rdiff can operate in an economic bandwidth mode over a pipe, as similar to rsync. Hence, you can use rdiff backup and SSH to securely backup a hard drive up to a remote location.
rsnapshot : A file system snapshot program for making backups of local and remote systems. Rsnapshot is based on rsync so obviously it is using rsync and hard links. Also it is possible to keep multiple, full backups instantly available. The requirement for the disk space is just a little bit more than the space of one full backup, plus it is incremental. The set up is depending on your server configuration. However, rsnapshot only keeps a determinate, but configurable number of snapshots so the amount of used disk space will not continuously increase. In addition, this rsnapshot is written in Perl so it able to work all the latest Linux OS platforms.
Rsync : A powerful service that is surprisingly easy to set up on your system. Instead of having a scripted FTP session or some other form of file transfer script; rsync copies copies only the diffs of files that have actually changed, and compressed. And if you want more security, then you can use SSH that is wonderful.
Flexbackup : It consists of flexible backup tool and if you have an individual or small number of systems, then Amanda is really too much and tarring things up by hand is not enough. This is very easy to configure and uses dump/afio/tar/cpio/star/etc…..as a backend. In simple words, backup levels, as in dump. There are certain levels of advantages of using Flexbackup such as configurable backup sets, writes tapes, on disk archive files, or on disk directory trees. RPM mode is only for changed and unowned files.
Abakt : A free backup tool for windows. It is using a combination of advanced filters so you can select files and directories to compress, copy or move. You can pick files by creating filters that based on the properties of files and these file properties include file name, directory, attributes, size, age, and modification date. In order to take backup it creates a standard PKZIP archive using built in Zip library or you can call the external command line tool 7-zip to create compressed archives. Additionally, you can copy, move, or delete the chosen files. Automation is yet another facility of Abakt that allows to accepts command line arguments. You can use command line options to feed a task scheduler, and in batch scripts.
R1Soft : CDP backup software that provides data protection and disaster recovery for Windows and Linux Servers in the cloud environment. It has developed highly specialized drivers that find out what data blocks need to be copied before the backup process starts. That’s the reason it reduces typical server backup time from hours to minutes and even there is no matter whether database is large.