Kopia
WindowsSecure, Open-Source Backup Solution with Windows Integration
Overview
Kopia is an open-source backup tool optimized for Windows, providing fast, encrypted, and space-efficient data protection. It integrates with Windows File Explorer (context menu access), uses Volume Shadow Copy (VSS) to back up in-use files (e.g., open docs/databases), and runs as a Windows Service for automated background backups. Features include end-to-end encryption, global deduplication (reduces storage usage), versioned snapshots, and support for multiple destinations: cloud (AWS, Azure, GCP), local drives, network shares, and more. Compatible with Windows 10/11, it’s ideal for personal and small-business users seeking reliable, transparent backup.
Key Features
- VSS integration for backing up locked Windows files
- File Explorer context menu access
- End-to-end encrypted backups
- Automated scheduling via Windows Service
- Multi-destination support (cloud, local, network)
Frequently Asked Questions
? Is Kopia compatible with Windows 11?
Yes, Kopia fully supports Windows 11, along with Windows 10 and older versions (Windows 7 SP1+ with necessary updates).
? Is it safe to install?
Yes, Kopia is open-source software with its code hosted on GitHub. It uses strong AES-256 encryption for backups, and you should always download it from the official website to ensure safety.
? Is there a portable version?
Yes, Kopia offers a portable executable that requires no installation. You can run it directly from a USB drive or any folder without modifying your Windows system settings.
Top Alternatives
Tool Info
Pros
- ⊕ Completely free and open-source
- ⊕ Deduplication saves storage space
- ⊕ Supports major cloud providers
- ⊕ Portable version available
Cons
- ⊖ Steeper learning curve for advanced settings
- ⊖ Limited GUI customization options
- ⊖ No official phone support (community-driven help only)