Kopia

Kopia is a cross-platform backup and restore tool for Windows, macOS, and Linux that creates snapshot-based, incremental backups of selected files and directories. It focuses on fast backups with client-side end-to-end encryption, compression, and deduplication, and can store backups in many different backends.

Key Features

• Snapshot-based incremental backups for files and directories (not full-disk imaging)
• Client-side end-to-end encryption with user-controlled keys
• Deduplication and compression to reduce storage usage
• Multiple repository backends, including local storage, network targets, and cloud object storage
• Command-line interface and a desktop GUI for managing backups, policies, and restores
• Supports backing up multiple machines to a shared repository

Use Cases

• Encrypted laptop and workstation backups with quick file restores
• Centralized backups for multiple servers to an object storage bucket or NAS
• Cost-efficient long-term backups using deduplication and compression

Limitations and Considerations

• Designed for file and directory backups rather than full system imaging
• Some storage backends via Rclone are experimental and may vary in reliability

Kopia is well-suited for users who want secure, portable backups with flexible storage choices and strong data reduction. It works for both technical users via CLI and everyday workflows through its GUI, while keeping encryption and storage selection under your control.