BorgBackup Has a Free Deduplicating Backup Program

BorgBackup (Borg) is a free, open-source deduplicating backup program with compression and authenticated encryption. What Is BorgBackup? BorgBackup is the backup tool that serious sysadmins use. It provides space-efficient storage through deduplication — only unique data chunks are stored, regardless of how many backups you make. Key features: Content-defined deduplication (huge space savings) AES-256 authenticated encryption LZ4, zstd, zlib, lzma compression Remote backup via SSH Mountable archives (browse backups as filesystem) Free and open source (BSD license) Proven reliability (10+ years, used by major organizations) How Deduplication Saves Space Traditional backup of a 10GB project: Backup 1: 10GB Backup 2: 10GB (even if only 100MB changed) 30 daily backups: 300GB total Borg backup of the same project: Backup 1: 10GB Backup 2: 100MB (only the changes) 30 daily backups: ~13GB total That's 95% less storage. Quick Start Install # Ubuntu/Debian sudo apt install borgbackup # macOS br