Kopia
Backups with client-side encryption
Backup & RecoveryApache-2.0Windows · macOS · Linux · Docker
About Kopia
Kopia creates encrypted, deduplicated snapshots with a GUI or CLI, supporting local paths, S3, B2 and many backends — plus server mode for teams. Modern backup architecture, open source.
Kopia is completely free and open source (Apache-2.0) — no trials, no subscriptions, no locked features. Always download from the official website to avoid bundled malware.
Free alternative to: Paid backup platforms
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