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Software · Backup & sync

Kopia

Kopia is a backup program, available on Windows, macOS and Linux: incremental backups and deduplication, end-to-end encryption, version history.

  • Completely free
  • Windows, macOS and Linux
  • Open source

Overview

Kopia is a backup program, available on Windows, macOS and Linux.

Features described in its Flathub listing, in its GitHub repository and on its official website: incremental backups and deduplication, end-to-end encryption, version history, command-line use.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “Fast and Secure Open-Source Backup Software for Windows, Mac, and Linux” — official website, 10 November 2026
  • “Cross-platform backup tool for Windows, macOS & Linux with fast, incremental backups, client-side end-to-end encryption, compression and data deduplication.” — Flathub, 10 November 2026
  • “Cross-platform backup tool for Windows, macOS & Linux with fast, incremental backups, client-side end-to-end encryption, compression and data deduplication.” — Flathub, 10 November 2026
  • “Kopia is a fast and secure open-source backup/restore tool that allows you to create encrypted snapshots of your data and save the snapshots to remote or cloud storage of your choice, to network-attached storage or…” — GitHub, 10 November 2026
  • “Demo of Kopia's Command-Line Interface” — official website, 10 November 2026

At a glance

All of Kopia is free: no feature is locked behind a paid plan, and its code is open.

Its licence (Apache-2.0) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

  • Open source code
  • Commercial use allowed

About

**NOTE: This wrapper is not associated with, supported by, or verified by the Kopia Project.** Cross-platform backup tool for Windows, macOS & Linux with fast, incremental backups, client-side end-to-end encryption, compression and data deduplication. CLI and GUI included.

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Unspecified source (platforms) —
  • Facts collected from Official plan pages (pricing, licence, terms) (commercial use) —
  • Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Last technical check: 7 November 2026
  • Description from Flathub — AppStream (Flathub)

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