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SPECIFICTION
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bup

bup.github.io

Free plan WindowsmacOSLinuxSelf-hosted
Visit bup.github.io
Spec score 7.9 #70 of 151 in Backup software

Spec sheet

Purpose
bup is a backup system based on the git packfile format, with incremental saves and global deduplication among and within files.Read 12 Oct 2026 · bup.github.io
Platforms
The README says bup has been reported to work on Linux, FreeBSD, NetBSD, OS X, Solaris, and Windows with Cygwin or WSL.Read 12 Oct 2026 · github.com
Integrations
The project lists git-annex as a storage backend and names related tools including bup-cron, Kup, Bups, bupper, and encbup.Read 12 Oct 2026 · bup.github.io
Support
The project directs users to its mailing list and the #bup channel on Libera.Chat for contact.Read 12 Oct 2026 · bup.github.io
Backup scope
fileRead 19 Sep 2026 · bup.github.io
Computer backup
YesRead 19 Sep 2026 · bup.github.io
Corruption recovery
The project says bup can use par2 redundancy to help recover corrupted backups, and its fsck command can generate recovery information.Read 12 Oct 2026 · github.com
Dependencies
The README describes Python 3.8 or newer, a C compiler, and Git 1.7.2 or newer as intended requirements; it says automatic testing covers some Python 3.9+ and Git 2.3+ versions.Read 12 Oct 2026 · github.com
Filesystem access
A bup repository can be mounted as a FUSE filesystem and exported over Samba.Read 12 Oct 2026 · github.com
Import tools
The man-page index lists commands for importing data from duplicity, rdiff-backup, and rsnapshot.Read 12 Oct 2026 · bup.github.io
Large files
Its rolling checksum splits large files into chunks so VM disk images, databases, and XML files can be backed up incrementally.Read 12 Oct 2026 · github.com
Limitations
The project cautions that bup is less well tested than tar and says its save and restore metadata support is immature.Read 12 Oct 2026 · github.com
Remote backups
Backups can be sent to a remote bup server over SSH, and an interrupted backup can resume on the next run.Read 12 Oct 2026 · github.com
Restore
An incremental backup can be restored as if it were a full backup, without first restoring earlier incrementals.Read 12 Oct 2026 · github.com
Restore modes
fileRead 19 Sep 2026 · bup.github.io
Storage format
bup stores data in git-formatted repositories and writes packfiles directly.Read 12 Oct 2026 · github.com

Plans and prices

bup Free Open-source backup software; no paid plans or usage limits stated Read 12 Oct 2026 · bup.github.io

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