Rclone
Rclone is a command-line program to manage files on cloud storage. It is a feature-rich alternative to cloud vendors' web storage interfaces. Over 40 cloud storage products support rclone including S3 object stores, business & consumer file storage services, as well as standard transfer protocols. Rclone has powerful cloud equivalents to the Unix commands rsync, cp, mv, mount, ls, ncdu, tree, rm, and cat. Rclone's familiar syntax includes shell pipeline support, and --dry-run protection. It is used at the command line, in scripts, or via its API. Rclone really looks after your data. It preserves timestamps and verifies checksums at all times. Transfers over limited bandwidth; intermittent connections, or subject to quota can be restarted, from the last good file transferred. You can check the integrity of your files. Where possible, rclone employs server-side transfers to minimize local bandwidth use and transfers from one provider to another without using the local disk.
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SyncBackPro
SyncBackPro is an advanced file backup and synchronization program that can be used with hard drives, removable media (e.g. USB drives), FTP, FTPS, and SFTP servers, Zip64 archives (with 256-bit AES encryption), POP3/IMAP4/SMTP email servers, Media Transfer Protocol devices, network shares, and cloud storage services (S3, Azure, Dropbox, OneDrive, Google Drive, Box, and many others). Highly configurable, SyncBackPro includes: open/locked file copying; file versioning; scripting; fast backup; true synchronization; Zip64 support; compression filtering; detailed and easy to read log files; email results; simulated backups and restore; file filters; sub-directory selection; copy verification; background backups; auto-close of programs; profile groups; compare files, and an extensive context sensitive help file.
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UrBackup
UrBackup is an easy to set up Open Source client/server backup system, that through a combination of image and file backups accomplishes both data safety and a fast restoration time. File and image backups are made while the system is running without interrupting current processes. UrBackup also continuously watches folders you want to be backed up in order to quickly find differences from previous backups. Because of that, incremental file backups are really fast. Your files can be restored through the web interface, via the client or Windows Explorer while the backups of drive volumes can be restored with a bootable CD or USB-Stick (bare-metal restore). Currently, there are over 21,000 running UrBackup server instances (with auto-update enabled) with some instances having hundreds of active clients. A web interface makes setting up your own backup server really easy. The custom client makes fast file and image backups possible.
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rsnapshot
rsnapshot makes it easy to make periodic snapshots of local machines, and remote machines over ssh. The code makes extensive use of hard links whenever possible, to greatly reduce the disk space required. Depending on your configuration, it is quite possible to set up in just a few minutes. Files can be restored by the users who own them, without the root user getting involved. There are no tapes to change, so once it’s set up, your backups can happen automatically untouched by human hands. And because rsnapshot only keeps a fixed (but configurable) number of snapshots, the amount of disk space used will not continuously grow. It is written entirely in perl with no module dependencies and has been tested with versions 5.004 through 5.16.3. It should work on any reasonably modern UNIX compatible OS.
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