Very efficient backup system based on the git packfile format, providing fast incremental saves and global deduplication (among and within files, including virtual machine images).

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Related Projects

A simple wrapper around bup to make it easier to run nightly backup jobs. While it's designed to run under cron, it can also be called directly.
A KDE front end.
A GTK3 front end.
A CLI wrapper to bup that lets you set backup profiles in a configuration file. Each profile can also call pre- and post-backup scripts.
A script that ingests files from disk and outputs an encrypted stream to a file or to stdout. You can then pass this on to bup split.
git-annex manages distributed copies of files using git (particularly large files, e.g. audio, video, images). Among other things, it supports partial checkouts and automatic checks to make sure that deleting a local copy of a file won't break rules you've established, like "there must always be at least 3 copies of any given photo, across all of my known checkouts". git-annex has configurable storage backends, and bup is one of the options.
git-annex assistant
The git-annex assistant turns git-annex into an easy to use folder synchroniser that works across Linux and OSX computers, Android devices, removable drives, NAS appliances, and cloud services.

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Older Releases

If you're looking for a previous bup release, you can head over to the project's releases page.